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Unmanned Spaceflight.com _ New Horizons _ Charon Surface Observations: NH Post-Encounter Phase

Posted by: nprev Aug 1 2015, 06:02 PM

This topic is for images and discussion of same received after 1 Aug 2015.

Posted by: Gennady Ionov Aug 2 2015, 07:49 AM

QUOTE (fredk @ Aug 2 2015, 07:50 PM) *
What makes you say that?

Yes, frame was taken 2015-07-16 03:44:20 UTC, more than a day after encounter.
Post deleted. Sorry for my mistake.

Posted by: fredk Aug 2 2015, 02:50 PM

QUOTE (Gennady Ionov @ Aug 2 2015, 08:49 AM) *
the Sun is behind the Charon's disc

What makes you say that? The size of Charon in that post-encounter frame is roughly similar to its size in this frame:
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029907/lor_0299075349_0x632_sci_1.jpg
That pre-encounter frame was taken more than a day before closest approach, so the post-encounter frame had to be taken roughly a day after closest approach. But the Charon-sun occultation occured only 2h 15m after closest approach. So the sun must be outside the frame on that Charon crescent image.

Posted by: Herobrine Aug 2 2015, 03:56 PM

The picture fredk linked was taken from a range of 1,462,006 km, according to http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level1/lor/info/029907/lor_0299075349_0x632_eng_1.txt.
The crescent image was taken from a range of 1,986,740 km, according to http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level1/lor/info/029932/lor_0299324179_0x630_eng_2.txt, and since apparent diameter has a simple, inverse relationship with distance, Charon should be about 73.6% the size it was in the image fredk linked.

Not that that adds anything to the conversation

Posted by: Gennady Ionov Aug 4 2015, 06:21 PM

QUOTE (JRehling @ Aug 4 2015, 11:04 PM) *
Checking the orbital positions, there were Charonshine opportunities for imaging Pluto on July 14, July 20, etc. and Plutoshine opportunities for imaging Charon on July 17, July 23, etc.

If we get some regional albedo information for the mid-southern latitudes, that would be great. A bonus would be if we get some details and/or could see if Charon has a dark region at the other pole, too. I'd love to see something like the Saturnshine images of Iapetus, but I'm not getting my hopes up.

Yes! I hope that Charon has a dark region at the southern pole, because I believe that Mordor Regio resulted from leakage of ice from the equator in the relaxation process of Charon nonsphericity during deceleration of rotation.

Posted by: alan Aug 6 2015, 08:53 PM

http://pluto.jhuapl.edu/Multimedia/Science-Photos/image.php?gallery_id=2&image_id=264

Posted by: Bill Harris Aug 7 2015, 12:41 AM

This appears to be a ~ half-size (5000px wide vs 9520px wide) of the previously-released PIA19866 with no new data added, for those who have the earlier map.

http://photojournal.jpl.nasa.gov/catalog/PIA19866

--Bill

Posted by: Bjorn Jonsson Aug 10 2015, 04:25 PM

Here is an updated version of my map of Charon. The main changes are the addition of color (areas where no color was available are colorized) and the addition of http://pluto.jhuapl.edu/soc/Pluto-Encounter/view_obs.php?image=data/pluto/level2/lor/jpeg/029917/lor_0299175604_0x632_sci_3.jpg&utc_time=2015-07-14%3Cbr%3E10:28:05%20UTC&description=%5bnot+yet+coded%5d&target=CHARON&range=0.1M%20km&exposure=60%20msec. Compared to the official map, there are some positional errors (typically ~10 pixels; more near the pole) but they do not affect the overall appearance of the map. Longitude 0 is at the left edge of the map.



I'll probably redo the map completely at higher resolution later this year.



Posted by: scalbers Aug 10 2015, 04:54 PM

Nice map. I appreciate in particular the images are blended more smoothly at the boundaries than we often see in the official versions.

Posted by: Bill Harris Aug 18 2015, 05:21 PM

Charon is turning out to be a delightfully complex and fascinating world. It has a polar crater-caldera, a system of lineations with a complex equatorial fracture system, a cratering history and a north-south dichotomy as well as seasonal frosts. Much more than the little Pluto tag-along we were thinking it was.

I am doing a presentation on the Geomorphology of Charon. As always, it is a work-in-progress, so check back:

LORRI-MVIC combined imagery
https://univ.smugmug.com/New-Horizons-Mission/PlutoCharon/i-RFJg7nT/0/L/nh_charon--LORRI%20%2B%20MVIC-L.png

Preliminary Geomorph of Charon
https://univ.smugmug.com/New-Horizons-Mission/PlutoCharon/i-krVkDk2/0/L/nh_charon--geomorph-v1.0-L.png


--Bill

Posted by: alan Sep 10 2015, 06:41 PM

http://pluto.jhuapl.edu/Multimedia/Science-Photos/image.php?page=1&gallery_id=2&image_id=280

QUOTE
This image of Pluto's largest moon Charon, taken by NASA's New Horizons spacecraft 10 hours before its closest approach to Pluto on July 14, 2015 from a distance of 290,000 miles (470,000 kilometers), is a recently downlinked, much higher quality version of a Charon image released on July 15.


I wonder if this means other LORRI images currently posted will be replaced by less compressed versions tomorrow.

Posted by: Habukaz Sep 10 2015, 07:03 PM

Charon's north pole looks to me like it could have a relatively young surface - or just having craters as dark as their surroundings?


Posted by: stevesliva Sep 10 2015, 07:19 PM

NH Blog post today about how the red pole may be tholins left behind after some of Pluto's atmosphere freezes onto Charon's dark pole, only to sublimate away leaving behind trace tholins:
https://blogs.nasa.gov/pluto/2015/09/09/new-horizons-probes-the-mystery-of-charons-red-pole/

Posted by: machi Sep 11 2015, 07:34 PM

Colorized image of Charon from the newly published images.
2 stacked images colorized using MVIC data.
Resolution 2.3 km/pix.

https://farm1.staticflickr.com/599/21317475992_1590280f6d_b.jpg

Posted by: ngunn Sep 11 2015, 09:29 PM

QUOTE (stevesliva @ Sep 10 2015, 08:19 PM) *
NH Blog post today about how the red pole may be tholins left behind after some of Pluto's atmosphere freezes onto Charon's dark pole, only to sublimate away leaving behind trace tholins:


Nice theory. If correct this must be a very slow or no longer active process as we see a few bright impact craters punched into it.
Wonderful image NH/machi. smile.gif

Posted by: alan Sep 25 2015, 07:16 PM

new images as the LORRI site
http://pluto.jhuapl.edu/soc/Pluto-Encounter/index.php?order=downlinkDate

Posted by: Habukaz Sep 25 2015, 07:25 PM

Baby mountain-in-a-moat? wink.gif



(notice the difference to the similar-sized crater next to it)

In general, quite a lot of mountainous structures on those plains.

Posted by: Gennady Ionov Sep 25 2015, 08:08 PM

QUOTE (Gennady Ionov @ Aug 3 2015, 07:30 PM) *
Another interesting feature of relief: small dimples. I suppose that it is an analogue of the dunes in the desert, caused not by the wind but solar irradiation conditions.
Oriented to the Sun the north side evaporates and on the shady south sides condensation occurs. Thus, the instability of a flat surface develops and slowly creeping dunes to the south (when in the northern hemisphere is summer). Therefore, the perpendicular meridians orientation of formations can be observed.

It looks like the similar dunes seen on Charon. Dunes caused by instability of flat surface due to instability under slanting rays of the sun.
At least Charon dunes definitely can not be caused by wind.

Posted by: Bill Harris Sep 25 2015, 08:56 PM

QUOTE (Alan)
new images as the LORRI site


They do have the Additn'l Info as "LORRI rider on P_MPAN_1 scan observation", and there is an button to show by release date, but I don't see any _release_date_ info on the images. Have I missed something?


and a reminder of my NH Charon geomorph image:
https://univ.smugmug.com/New-Horizons-Mission/PlutoCharon/i-krVkDk2/0/O/nh_charon--geomorph-v1.0.png

--Bill

Posted by: JohnVV Sep 25 2015, 09:01 PM

from
http://pluto.jhuapl.edu/soc/Pluto-Encounter/view_obs.php?image=029917/lor_0299175682_0x630_sci_4.jpg&utc_time=2015-07-14<br>10:29:23
a 3d look down the canyon


Posted by: Ian R Sep 25 2015, 09:07 PM

https://www.flickr.com/photos/10795027@N08/21721963241/

Posted by: Superstring Sep 25 2015, 09:38 PM

Charon looks far less cratered than Callisto, Ceres, Mimas, Tethys, Dione, Rhea, and Iapetus (plus Umbriel, Titania, and Oberon based on lower resolution images).

Perhaps we're looking at a surface age closer to that of Ganymede, Miranda, and Ariel?

Posted by: jccwrt Sep 26 2015, 07:02 AM

My attempt at stitching together the Charon mosaic that was uploaded on the raw website today. Tried my hand at colorizing it with the MVIC image taken on July 13. I had to warp the image to align with low resolution + Charon's rotation making that difficult, so color features should be taken with a *huge* grain of salt.

https://flic.kr/p/z6vDu2

Posted by: neo56 Sep 26 2015, 08:42 AM

Really nice work Justin !

Posted by: Habukaz Sep 26 2015, 04:21 PM

With the latest high-resolution imagery down, it really looks like there is significant topography at the north pole (there certainly is on the horizon). Using jccwrt's work above (rotated to make north up(wards)), it's tempting to interpret this part as a mountain range (perhaps http://www.unmannedspaceflight.com/index.php?act=Attach&type=post&id=36948), entering and leaving the field of view on the right side in this image:



I also found this crater interesting, since it appeared kind of shallow - as if something had happened to its floor:



And of course there is this crater (to the right), which looks completely filled in:



Dome?



Landslides from some of the big cliffs:



(look impact-related)

Posted by: Bill Harris Sep 26 2015, 06:13 PM

It seems that Charon has Cerean topography, especially the "flowage" and "slumpage" features.

And my take on Mordor (the Polar Feature) is that it appears to be a caldera/crater.

Ref my "Pluto/Charon" and "Ceres" pages linked below.

What strange little worlds.

--Bill

Posted by: jccwrt Sep 26 2015, 11:37 PM

QUOTE (neo56 @ Sep 26 2015, 02:42 AM) *
Really nice work Justin !


Thank you!

QUOTE (Habukaz @ Sep 26 2015, 10:21 AM) *
With the latest high-resolution imagery down, it really looks like there is significant topography at the north pole (there certainly is on the horizon). Using jccwrt's work above (rotated to make north up(wards)), it's tempting to interpret this part as a mountain range (perhaps http://www.unmannedspaceflight.com/index.php?act=Attach&type=post&id=36948), entering and leaving the field of view on the right side in this image.


It could be a mountain range. My first thought was that it was another large fissure system seen edge on. Of course, at the scale of some of these, there's functionally not much difference! laugh.gif It is interesting that it is "walling in" some of the darker terrain around the north pole - I wonder if it's either creating a cold trap that keeps the north pole in winter darkness for a little longer.

As for the infilled crater, it looks pretty old and degraded, so there's a possibility that it could just be infilled with ejecta from other impacts. That said it's on relatively flat terrain so there might have been some mare-like flow into the crater. Hopefully we'll get another hi-res image to get some context to the eastern rim of that crater.




This crater (directly north of Moat Mountain) looks interesting, could be a potential terrace impact. Looks relatively young, too. Some of the ejecta is covering nearby tectonic features.

Posted by: Bill Harris Sep 29 2015, 03:30 PM

These latest Charon images, five in a montage-able series described as "LORRI rider on C_LEISA_HIRES scan" are a great improvement on the initial Charon images.

When these images hit PDS as verified and calibrated etc they should be better than these initial jpeg'd public offerings, so there is room for improvement.

But with later data transfer from NH, should there be higher resolution images of this series to look forward to? And could there be other images north and south of these to give a montage of the entire hemisphere or was this one track pretty much it?

Still, these images show astounding detail and amazing features on this little world. Take a look:

https://univ.smugmug.com/New-Horizons-Mission/PlutoCharon/i-wQNMfhT

--Bill


Posted by: jccwrt Sep 29 2015, 04:16 PM

According to machi's https://drive.google.com/file/d/0B7ahcDowD8i_SEpwZ0dTeG9zalE/view?pli=1 it appears there was a scan across Charon at 170 m/px resolution. As for the C_LEISA_HIRES observation, there were apparently 12 shots planned in this sequence. I'm not sure if that means that this will cover the entire globe of Charon or if there were just multiple images taken to increase SNR like some of the LORRI observations of Pluto. Considering that this is a ride-along observation, I'd guess the latter.

Posted by: alan Sep 29 2015, 04:20 PM

There was a mosaic taken at 175,000 km which should cover the entire hemisphere at a resolution 0.87km/px ,similar to the 16 frame mosaic of Pluto posted a couple of weeks ago; an MVIC color image from 76,000 km, resolution 1.5km/px; and a narrow pass from 34,000 km, resolution 0.17km/px, with a concurrent MVIC image at 0.66km/px.

Posted by: Bill Harris Sep 29 2015, 11:53 PM

Still, that is good. The recent images have so much going on. Later images transmitted and images on-the-ground-but-going-to PDS can only sweeten things.

https://univ.smugmug.com/New-Horizons-Mission/PlutoCharo/i-4VfJH2t/0/O/lor_0299175682_0x630_sci_4--enh--pano_5x1--annot.png



--Bill

Posted by: peter59 Oct 1 2015, 05:06 PM

Woooow !
http://pluto.jhuapl.edu/Multimedia/Science-Photos/pics/Charon-Neutral-Bright-Release.jpg

Posted by: lars_J Oct 1 2015, 05:07 PM

QUOTE (peter59 @ Oct 1 2015, 12:06 PM) *
Woooow !
http://pluto.jhuapl.edu/Multimedia/Science-Photos/pics/Charon-Neutral-Bright-Release.jpg


And more details:


 

Posted by: Habukaz Oct 1 2015, 05:18 PM

Didn't notice this one earlier. Curious feature:



moat without a mountain.

Posted by: alan Oct 1 2015, 07:47 PM

My estimate of the highest resolution track


Posted by: Mariner9 Oct 1 2015, 08:08 PM

What is the highest resolution we expect? I recall reading it in a journal article that I no longer have a link to. Something around 140 M/pixel is what comes to mind.

Posted by: Bill Harris Oct 1 2015, 11:29 PM

Whoa. Great images today for us Charon-ites.

Good color:
http://pluto.jhuapl.edu/Multimedia/Science-Photos/image.php?gallery_id=2&image_id=323

The hi-res track with color:
http://pluto.jhuapl.edu/Multimedia/Science-Photos/image.php?gallery_id=2&image_id=324

Charon and Pluto:
http://pluto.jhuapl.edu/Multimedia/Science-Photos/image.php?gallery_id=2&image_id=325

A CGI riff:
http://pluto.jhuapl.edu/Multimedia/Science-Photos/image.php?gallery_id=2&image_id=326

And of course, that '70's Gold to hum along with, by The Knack: "My Charona":
www.youtube.com/watch?v=g1T71PGd-J0

I'll be up for air by Sunday... biggrin.gif

--Bill


Posted by: Nafnlaus Oct 2 2015, 11:42 AM

Does anyone know, at what point on Charon's surface is the center of the Pluto-facing side?

Posted by: Bill Harris Oct 2 2015, 12:49 PM

Zero lat, zero longitude?

Posted by: Floyd Oct 2 2015, 01:43 PM

That would certainly be a logical convention for mapping... and I believe the correct one. The caption to the first Charon map released by nasa was:

Global map of Charon as of July 30, 2015. The map is in simple cylindrical projection, with zero longitude (the Pluto-facing direction) in the center. It includes all available resolved images of the moon’s surface captured between July 7-14, 2015 on the anti-Pluto facing hemisphere. Image credit: NASA / Johns Hopkins University Applied Physics Laboratory / Southwest Research Institute.

Posted by: Hungry4info Oct 3 2015, 02:24 AM

Could you add a link? (If you did, I can't see it from my device).

Posted by: centsworth_II Oct 3 2015, 05:41 AM

QUOTE (Hungry4info @ Oct 2 2015, 10:24 PM) *
Could you add a link? (If you did, I can't see it from my device).

Is it the map linked in posts 6 and 7 of this thread?

Posted by: Floyd Oct 3 2015, 12:24 PM

Yes, the maps in posts #6 & #7. http://pluto.jhuapl.edu/Multimedia/Science-Photos/image.php?gallery_id=2&image_id=264

Posted by: Hungry4info Oct 3 2015, 01:06 PM

Got it. I thought you were suggesting there was a newer map that included the most recently released imagery.

Posted by: Floyd Oct 3 2015, 04:25 PM

The recently released image is so beautiful, I'm not really looking forward to seeing it embedded in a cylindrical map with the low resolution fuzz all around...

Posted by: Gladstoner Oct 3 2015, 05:31 PM

Interesting texture:


Posted by: climber Oct 3 2015, 06:07 PM

This one is from Apollo 11, rigth?

Posted by: CAP-Team Oct 4 2015, 10:08 PM

Has anyone made an updated map for Charon?

Posted by: Steve G Oct 5 2015, 04:41 AM

It almost looks like this island broke apart from the mainland, was carried off and then listed in the Great Melt of the southern hemisphere.
Note how some of the parts fit, similar to South America and Africa.



Posted by: TSC Oct 5 2015, 04:11 PM

(Newbie here.) This track is not an image artefact, is it? The lower right corner indicates its location.


Posted by: Herobrine Oct 5 2015, 05:25 PM

QUOTE (TSC @ Oct 5 2015, 12:11 PM) *
(Newbie here.) This track is not an image artefact, is it? The lower right corner indicates its location.

I don't think it's an artefact. It's hard to tell at this resolution, but it looks like a catena/crater chain to me. Not sure how common that should be this far out.

Posted by: Bill Harris Oct 5 2015, 06:56 PM

QUOTE (HSchirmer @ Oct 5 2015, 11:20 AM) *
Not sure it's a clean fit, and it could also be a fissure where both edges erode back from the newly exposed surface...


Yep, whenever I see that feature my first thought is that it's a wee crustal plate that has broken off and is drifting away. But then I look at it and although the "fit" of the break is good, it just doesn't "feel" right. Probably what I'll do is create an enlarged and enhanced view of that feature and put it out it for public review. I suspect that it is not so much a fracture and a drift as it is a landslide feature.

I note that there is a similar set of fractures to the west making possibly a new "incipient allochthon".

What a strange little world.

--Bill



Posted by: scalbers Oct 5 2015, 08:12 PM

QUOTE (CAP-Team @ Oct 4 2015, 10:08 PM) *
Has anyone made an updated map for Charon?

Good question - here is a quick one at 4K resolution...


Posted by: JohnVV Oct 5 2015, 09:24 PM

some alternate views of the rift and crater chain
sun set at a 45 deg elevation
http://imgbox.com/OUFQzLB5 http://imgbox.com/wSG0GyPz http://imgbox.com/wYMAWyTU http://imgbox.com/4LSr2KsW
the chain
http://imgbox.com/w1Qg7VpN http://imgbox.com/6HFFRGMP

Posted by: ngunn Oct 5 2015, 09:32 PM

QUOTE (Steve G @ Oct 5 2015, 05:41 AM) *
It almost looks like this island broke apart from the mainland, was carried off and then listed in the Great Melt of the southern hemisphere.
Note how some of the parts fit, similar to South America and Africa.




The detached block is definitely tilted, suggesting it has moved, so I agree with the idea that it was once more horizontal and belonged to the northern 'continent'. As has been pointed out it may not have drifted horizontaly enough to produce the wide gap we now see. It is obviously fractured and different parts of it are tilted at different angles so to me it's not surprising that there isn't a perfect match up with the 'continental' boundary. I think as a general idea your suggestion runs.

Posted by: scalbers Oct 5 2015, 10:57 PM

Yes that block looked pretty interesting ever since the farther away images.

Here is a slightly cleaner map compared with what I posted earlier this afternoon.


Posted by: nprev Oct 7 2015, 04:23 PM

MOD NOTE: 7 posts about N2 ice & putative polar caps moved to the http://www.unmannedspaceflight.com/index.php?showtopic=8060&st=80&#entry226972 thread.

Posted by: Bill Harris Oct 9 2015, 03:54 AM

QUOTE
Here is a slightly cleaner map...

That is great. And the "Beyond Here Lie Dragons" are looking fuzzier and fuzzier with each improvement of "Terra Cognito". Sadly, soooo tantalizing...

I took this latest map and carefully selected the fuzzy area and applied an unsharp mask to bring out detail. It may have helped, but it's still a lost cause. I 'spect that a dondavis will need to go into the blurred areas and do "an artistic impression" of what they should ought to look like while we're waiting for a New Horizon's Orbiter. smile.gif

--Bill

Posted by: Antdoghalo Oct 9 2015, 04:02 PM

There is this map that could be included from occulations on Solarviews
http://solarviews.com/cap/pluto/charoncyl2.htm
The low resolution areas of the NH map and Mordor appear well on it along with the bright area on the west side of the Pluto facing hemisphere. There is also big area of brightness on the southern hemisphere on it. Maybe there is an opposite colored "Mordor" there.

Posted by: JRehling Oct 9 2015, 04:33 PM

QUOTE (Bill Harris @ Oct 8 2015, 08:54 PM) *
I took this latest map and carefully selected the fuzzy area and applied an unsharp mask to bring out detail. It may have helped, but it's still a lost cause.


It's interesting to consider, generically, the spatial distribution of areal units on different worlds: If you see half the world, do you see all of the major areal types and morphological phenomena represented? Usually, the answer is yes. Some exceptions: Ishtar on Venus, the nearside maria on the Moon, Valles Marineris on Mars, the northern plains on Mars, the "ring of fire" around the Pacific on Earth, the northern seas on Titan, the active south polar region on Enceladus… If you only saw the hemisphere "anti-" each of those things, you'd have no inkling of them represented in your data. Often, you'd have a lesser version of them, such as the farside maria on the Moon as a stand-in for the much broader nearside maria, but in some cases, you have no analogue at all.

Still, these cases are the minority, so the odds are, we've seen the important stuff on Pluto and Charon already, with more of the same on the other side. But there's no guarantee of that, and we may have missed something crucial… a Pluto equivalent of Tharsis or a Charon equivalent of Ishtar…

Posted by: alan Oct 9 2015, 07:08 PM

New images of Charon now at LORRI site http://pluto.jhuapl.edu/soc/Pluto-Encounter/index.php?order=downlinkDate&page=1

Posted by: Herobrine Oct 9 2015, 07:14 PM

Here is a full list of the new images on SOC. The LORRI image dump occurred 19 minutes ago.
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029916/lor_0299169016_0x630_sci_4.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029916/lor_0299169015_0x630_sci_4.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029916/lor_0299168968_0x630_sci_4.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029916/lor_0299168967_0x630_sci_4.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029916/lor_0299168920_0x630_sci_4.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029916/lor_0299168919_0x630_sci_4.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029916/lor_0299168776_0x630_sci_4.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029916/lor_0299168775_0x630_sci_4.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029916/lor_0299168728_0x630_sci_3.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029916/lor_0299168727_0x630_sci_3.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029916/lor_0299168679_0x630_sci_3.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029913/lor_0299137075_0x630_sci_3.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029913/lor_0299137074_0x630_sci_3.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029913/lor_0299137015_0x630_sci_3.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029913/lor_0299137014_0x630_sci_3.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029913/lor_0299136955_0x630_sci_3.jpg
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029913/lor_0299136954_0x630_sci_3.jpg
All of the images are described as "Tight-deadband 2-sigma LORRI mosaic of Charon" Edit:...excpet for the ones that aren't, since those last 6 are targeted at Styx, not Charon. rolleyes.gif

Posted by: ugordan Oct 9 2015, 07:54 PM

QUOTE (Herobrine @ Oct 9 2015, 09:14 PM) *
All of the images are described as "Tight-deadband 2-sigma LORRI mosaic of Charon"

The last 6 images you listed are not of Charon, they are described as :
QUOTE
This image may look blank but it actually contains a resolved image of Pluto’s smallest moon, Styx.

Posted by: Herobrine Oct 9 2015, 09:07 PM

@ugordon Oops. Good catch. You are correct. The last 6 are described as "LORRI 2nd Portion" (in the same metadata field I used for the other description) and identified as "U_TBD_1_02". I was in a hurry to put together the below image and only checked a random half of the metadata files (managed to miss the Styx ones every time laugh.gif ).

Here's a hand-stitched mosaic of the 11 Charon images.
http://mc.herobrinesarmy.com/charon.png
(2400x2400, ~1.4 MiB)

 

Posted by: machi Oct 9 2015, 10:05 PM

Stereo images of Charon using new LORRI images and older MVIC image.
Resolution is ~870 m/pix. Extremely interesting topography.

https://www.flickr.com/photos/109586958@N03/21873130429/

https://www.flickr.com/photos/109586958@N03/21438711143/


Posted by: Nafnlaus Oct 10 2015, 01:42 PM

I think you've got your stereo backwards, it looks concave.

Posted by: MarsInMyLifetime Oct 10 2015, 03:21 PM

QUOTE (Nafnlaus @ Oct 10 2015, 08:42 AM) *
I think you've got your stereo backwards, it looks concave.

Cross-eyed looks fine to me... the canyons have depth. Behind the polar cap the terrain itself is definitely lumpy and somewhat excavated. I think that is a real feature.

Posted by: Gladstoner Oct 10 2015, 03:55 PM

If y'all keep doing that cross-eyed method, your eyes will stay like that. smile.gif

Anyway, Alan Stern retweeted this from Corey Powell:



https://twitter.com/coreyspowell/status/652757094387593216

'Moat without a mountain' next to a 'mountain with a moat'. I noticed that before but hadn't given it much thought. On second thought, quite interesting....

Posted by: antipode Oct 10 2015, 09:54 PM

Are these moats and mountains all within that moon-spanning spreading tectonic/rift zone?

Just asking. If so what implications might that have?

P

Posted by: Nafnlaus Oct 10 2015, 10:27 PM

QUOTE (MarsInMyLifetime @ Oct 10 2015, 03:21 PM) *
Cross-eyed looks fine to me... the canyons have depth. Behind the polar cap the terrain itself is definitely lumpy and somewhat excavated. I think that is a real feature.


The whole moon looks concave, like looking into a bowl.

Posted by: fredk Oct 10 2015, 11:02 PM

The anaglyph is correct (for standard red/left and cyan/right glasses). The crosseyed is also correct. Maybe you're trying to view it parallel? That would invert the stereo.

Posted by: Nafnlaus Oct 10 2015, 11:37 PM

QUOTE (fredk @ Oct 10 2015, 10:02 PM) *
The anaglyph is correct (for standard red/left and cyan/right glasses). The crosseyed is also correct. Maybe you're trying to view it parallel? That would invert the stereo.


Don't know what you mean by "view it parallel" - I'm just crossing my eyes and aligning the two images. Either way, it's not a big deal, I've always found these sort of images to not be that useful.

Posted by: FOV Oct 11 2015, 01:03 AM

The anaglyph works for me and looks fantastic.

Posted by: Bill Harris Oct 11 2015, 02:09 AM

QUOTE (Gladstoner)
Moat without a mountain' next to a 'mountain with a moat'. I noticed that before but hadn't given it much thought. On second thought, quite interesting....


The Moat-Mountain/Moat series of features seem to be developing into a lineation ("Argo Chasma") to the north and east, separate from the "dichotomy rifts" ("Serenity chasma" and "Macross chasma"). That fuzzy area of the non-flyby hemisphere is so tantalizing.

--Bill

Posted by: machi Oct 11 2015, 12:10 PM

QUOTE (Nafnlaus @ Oct 10 2015, 03:42 PM) *
I think you've got your stereo backwards, it looks concave.


It's anaglyph and cross-eye and both work as intended.
If you have problem with cross-eye version, you can try http://stereo.jpn.org/eng/stphmkr/ and swap left and right images.
StereoPhoto Maker also allows easy viewing at 100% size.

Posted by: Bjorn Jonsson Oct 13 2015, 12:16 AM

I have been experimenting with generating a DEM of Charon from a stereo pair. The resulting DEM is extremely crude and noisy, my software isn't very sophisticated and the JPG compression artifacts mess things up but at least I'm getting something that may be interesting. Here is a color coded DEM in simple cylindrical projection generated using images http://pluto.jhuapl.edu/soc/Pluto-Encounter/view_obs.php?image=029917/lor_0299175643_0x630_sci_4.jpg&utc_time=2015-07-14%3Cbr%3E10:28:44%20UTC&description=%5bnot%20yet%20coded%5d&target=CHARON&range=0.1M%20km&exposure=60%20msec&imgType=approved and http://pluto.jhuapl.edu/soc/Pluto-Encounter/view_obs.php?image=029916/lor_0299168728_0x630_sci_3.jpg&utc_time=2015-07-14%3Cbr%3E08:33:29%20UTC&description=%5bnot%20yet%20coded%5d&target=CHARON&range=0.2M%20km&exposure=150%20msec&imgType=approved together with an image showing the terrain convered by the DEM:



The are some errors due to the fact that I don't know the exact viewing geometry of the source images (the accuracy to which I could reverse engineer it is limited). The DEM is also noisy and low-res but it can be used to make crude estimates of relative elevation differences. For example the big crater at the left edge is probably 1-1.5 km deep. The depression/'canyon' at bottom and extending to the right edge is probably ~2.5 km deep but this is somewhat difficult to estimate due to noise in the DEM and the depth may also be variable.

But what's really interesting is that the DEM reveals a possible gentle, large scale depression (the big blue area). I can't completely rule out that the southern edge of this feature could be an artifact caused by inaccurate viewing geometry but a more probable explanation is that this is a real feature. Here is one of the two images I used to make the DEM with the very approximate boundary of the possible depression indicated with green dots:



I think it should be possible to generate considerably better DEMs than this one, even when JPG source images are used. I have been looking for software (mainly free/open source stuff) to use instead of what I'm using now. I don't know yet what's going to come out of that but a lot has happened in this field since I originally wrote my (crude) stereo software several years ago.

Posted by: JohnVV Oct 13 2015, 02:41 AM

for low frequency heights like that the sfs i use is mostly useless
it is good on hi-frequency data like the rift on the right

for this stereo is needed then run the sfs from ASP on the Gtiff from stereo-pipline ( a hi-breed sfs with the stereo using the spice data )
this is what i get -- good for wrapping around a sphere mesh for 3d shading but--- has problems
a 8 bit height map for " lor_0299175643_0x630_sci_4.jpg"



the lower half of the creator is ??? iffy maybe ??? some what visible in mine
but that is only in a side by side with your green dots

Posted by: machi Oct 13 2015, 10:05 AM

QUOTE (Bjorn Jonsson @ Oct 13 2015, 02:16 AM) *
But what's really interesting is that the DEM reveals a possible gentle, large scale depression (the big blue area). I can't completely rule out that the southern edge of this feature could be an artifact caused by inaccurate viewing geometry but a more probable explanation is that this is a real feature.


I see major parts of your big blue area as depression but I think that circular shape is partly caused by artifacts.
I think that central part (ridges) has different origin. My interpretation is that depressions are probably part of the same event which caused southern hemisphere resurfacing.
Here is quick graphics which shows boundaries of different areas. Blue boundary is edge of resurfaced southern hemisphere. Green boundary is continuation of this resurfacing event through central chasmata system. Red boundary shows edges of another depressions (they are visible in your DEM) which could be another part of the same southern hemisphere resurfacing event.

 

Posted by: Bill Harris Oct 13 2015, 02:56 PM

Agreed. The green-dotted depression is probably not a depression and, from the surface morphology, appears to be flatish or possibly a slightly positive elevation. It is probably a result of activity in the area of "Ripley" crater. There many changes with some resurfacing and it seems to occur in episodic events. More and more details pop out with increases in resolution-- this is going to be an interesting little world to figure out.

I'm looking forward to the Dawn team producing an elevation map. In the meantime, what are your feelings on the topography of "Mordor" macula? This feature does appear to be a depression, with the deepest rim being on the Pluto-side (left) and a shallower rim being on the anti-Pluto (right) side. I believe that feature will turn out to be the strangest of the strange on Charon.

--Bill


Posted by: atomoid Oct 13 2015, 06:01 PM

crosseye and parellel excerpt from http://www.unmannedspaceflight.com/index.php?showtopic=8072&view=findpost&p=227186
yet another mystery wrapped in a connundrum, as if a cryovolcanic plug rose from one but why not the the other? although there is a minimountain just behind it. the fault line almost equidistant and perpendicular between the disparate moats mere coincidence?


Posted by: Gladstoner Oct 16 2015, 05:23 PM

Charon close-ups coming down:

http://pluto.jhuapl.edu/soc/Pluto-Encounter/index.php

Posted by: volcanopele Oct 16 2015, 06:08 PM

Here's a quick mosaic of the C_MVIC_LORRI_CA images.


Posted by: Nafnlaus Oct 16 2015, 08:04 PM

Okay, wow. If I only saw the right hand side of that I'd have thought it was Pluto! It's got the same sort of (what we've been presumling is sublimation pitting) that we see on Pluto - that's so neat! And it's not everywhere, either...

We also got the "three hills in a moat" terrain, our first closeup of one of the moats. Looks like a large chunk of the western side is slumping into it. A couple small areas also look to be slumped.

The biggest moat there is polygonal - doesn't look like a crater at all. And there's some rather weird low-relief structures near its southern end and in the craters to the south - no idea what those might be. Kind of like something bubbled up there or something.

Posted by: Bjorn Jonsson Oct 16 2015, 08:51 PM

QUOTE (Nafnlaus @ Oct 16 2015, 08:04 PM) *
Okay, wow. If I only saw the right hand side of that I'd have thought it was Pluto! It's got the same sort of (what we've been presumling is sublimation pitting) that we see on Pluto


I'm sure I've seen very similar pitted terrain elsewhere (not including Pluto) and I'm trying to remember where. Probably on Mercury, the Moon or Mars.


Posted by: Herobrine Oct 16 2015, 08:56 PM

Extreme stereo view on Charon.
Parallel viewing:


Cross-Eye viewing:

Posted by: ngunn Oct 16 2015, 09:59 PM

I'm intrigued by the dark-splat-in-the-middle-of-a-bright-splat in this image. (It appears at the edge of Herobrine's 3D view above.) The dark splat is presumably more recent than the larger bright one. I think it unlikely that very differently toned materials were thrown out by the two events, so I come round to the idea that ejecta change colour with time in a non-monotonic way. They are dark at first before bleaching out, and only then dull down again to match the general tone of the surroundings. Any thoughts?
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029918/lor_0299180415_0x630_sci_4.jpg

Posted by: volcanopele Oct 16 2015, 10:29 PM

It could also be due to layering in the near-surface of Charon. IIRC the more distal, bright rays should come from material that was near the surface while the closer dark ones would result from ejects that originated at greater depths.

Posted by: ngunn Oct 16 2015, 10:56 PM

Interesting, but I find it hard to believe that the bigger impact missed the dirt but the later smaller one found it.

Or are you saying that it was all exposed at once, with dark and light ejecta zones mapping the subsurface layers?

Posted by: JohnVV Oct 17 2015, 12:04 AM

a few 3d renders from
http://pluto.jhuapl.edu/soc/Pluto-Encounter/index.php
lor_0299180418_0x630_sci_3.jpg
lor_0299180415_0x630_sci_4.jpg

----------
joined the two then created a heightmap from that
http://imgbox.com/ryFgxKSX http://imgbox.com/D3eqdAwH http://imgbox.com/LnwJCPnB http://imgbox.com/QGiWHZD4

http://imgbox.com/Jo9wZXz4 http://imgbox.com/FYANz08T http://imgbox.com/0OhESVf4

Posted by: eliBonora Oct 17 2015, 03:35 AM

Here the last mosaics

https://flic.kr/p/zJWqPw

https://flic.kr/p/zPTiHJ

EDIT

anaglyph

https://flic.kr/p/yWnmN5

Posted by: JohnVV Oct 17 2015, 06:42 PM

mosaic and crop of:
lor_0299180421_0x630_sci_3.jpg
lor_0299180424_0x630_sci_3.jpg
-----
the partially sunken mountain
http://imgbox.com/nZF3dUwO http://imgbox.com/pfIat7ml http://imgbox.com/z8dtr0wY http://imgbox.com/U3nKB79K

Posted by: HSchirmer Oct 19 2015, 08:03 PM

Here's an interesting bit of info, from our own (sorta) double planet,

Earth's tidal effects on the moon seem to determine the large scale orientation of lunar faults and scarps that result from cooling.



http://geology.gsapubs.org/content/43/10/851.full

So, it is reasonable to surmise that cracks visible on Charon's crust now were influenced by Charons' rotation relative to Pluto in the past....



Posted by: MichaelPoole Oct 30 2015, 03:19 PM

A probably young, ammonia rich crater has been found on Charon:

http://pluto.jhuapl.edu/News-Center/News-Article.php?page=20151029b

Posted by: Phil Stooke Oct 30 2015, 11:48 PM

We really need the PDS versions of the night-side images to do anything useful, but you have to wonder if anything will show up.

So here is a truly horrible image. It is a stack of ten of the early Pluto-shine images of Charon. They were averaged, then the average was subtracted from each frame separately, the bland result was stretched to a ridiculous degree, and the ten resulting frames were averaged again and merged into one layer.

Does it show anything? Probably not. But I still hold out hope for the raw data!

Phil


Posted by: JohnVV Oct 31 2015, 12:57 AM

Phil it is better than i expected

Posted by: machi Oct 31 2015, 01:10 AM

It's a pity that most Charon's images are binned so resolution is very low.
But is there something in the Plutoshine?
It is! Dark side of the Charon!

EDIT: I added 4× enlarged 90° rotated version after slightly better processing.


 

Posted by: ZLD Oct 31 2015, 01:37 AM

Best I could do in pulling anything out in a short time.



Lower right half, looks like there could be a few craters popping through. Could just be noise.



@Machi: Looks really great!

Posted by: Phil Stooke Oct 31 2015, 01:47 AM

"Phil it is better than i expected"


Actually, I just realized my strategy is removing the signal as well as the noise! What I did works properly with images like Clementine Long Wavelength Infrared, where the noise and hot pixels etc. are the same and can be subtracted, but the signal is different in each image. Here I am throwing the baby out with the bathwater, so to speak. Hmmm... need another strategy.

Phil

PS Machi - fantastic!

Posted by: Bill Harris Oct 31 2015, 04:54 AM

OTOH, I decided ot work with images that weren't already DOA. Here is a montage of the LORRI image set released a couple of weeks ago. Shows the "northern highland" and "southern plain" from a very different perspective than the near-encounter image sets we first saw.

The recently found "ammonia crater" ("Organa crater") is in the upper-left, partially obscured in a depression and the related "non-ammonia crater ("Skywalker crater") is just below center on the left, both near the limb. "Alice crater" is the large hummocky-floored crater in the "northern highland" and "Kirk crater" and "Clarke mons" are the features on the floor of the "southern plain"

https://univ.smugmug.com/New-Horizons-Mission/PlutoCharon/i-v5cSnbD/1/O/lor_0299180421_0x630_sci_3--enh--pano--annot.jpg

--Bill

Posted by: fredk Oct 31 2015, 04:02 PM

Machi: that is very nice - did you use all available frames for the 4x view?

ZLD - don't those frames show Pluto, not Charon?

Posted by: ZLD Oct 31 2015, 04:57 PM

fredk - no, they are a combination of frames from this series of Charon at 0.4Mkm: http://pluto.jhuapl.edu/soc/Pluto-Encounter/view_obs.php?image=029920/lor_0299209049_0x630_sci_3.jpg&utc_time=2015-07-14%3Cbr%3E19:45:30%20UTC&description=

This link doesn't translate correctly for this forum. They're currently (10-31-2015) on page 6 of SOC.

Posted by: surbiton Oct 31 2015, 08:27 PM

QUOTE (machi @ Oct 31 2015, 02:10 AM) *
It's a pity that most Charon's images are binned so resolution is very low.
But is there something in the Plutoshine?
It is! Dark side of the Charon!

EDIT: I added 4× enlarged 90° rotated version after slightly better processing.


At least, even I, with my little knowledge, can spot Cassiopeia ! Beautiful.

Posted by: fredk Oct 31 2015, 10:26 PM

The field of view of the LORRI camera is only about 0.3 degrees, so you wouldn't be seeing Cassiopea. It's not too hard to find W's in the sky, though...

Posted by: machi Oct 31 2015, 10:49 PM

QUOTE (fredk @ Oct 31 2015, 05:02 PM) *
Machi: that is very nice - did you use all available frames for the 4x view?


It's from the all binned frames. There are four other unbinned frames, darkside of Charon is visible in them but it's very noisy.
I'm pretty sure that full quality PDS versions will show more.


QUOTE (surbiton @ Oct 31 2015, 09:27 PM) *
At least, even I, with my little knowledge, can spot Cassiopeia ! Beautiful.


It's not Cassiopeia as it's much wider constellation than LORRI's FOV.
As image is made from two sequences with time difference 2 hours, Charon and stars changed their mutual positions.
That's why image of every star is doubled in the final summed image and because of that it can looks like Cassiopeia.

Posted by: fredk Nov 1 2015, 04:16 PM

A quick attempt to isolate Charon's crescent (clearly Charon in hindsight, with no atmosphere visible) from the lens flare etc. I took the two highest S/N frames, scaled them to the same average intensity, then averaged their two aligned differences before smoothing a bit and stretching:


No sign of craters or anything on the dark side.

Posted by: elakdawalla Nov 1 2015, 09:50 PM

QUOTE (ZLD @ Oct 31 2015, 08:57 AM) *
This link doesn't translate correctly for this forum.

The LORRI SOC image links are kind of difficult on a lot of platforms -- I usually run them through a link shortener like http://bit.ly/ before posting them anywhere.

Posted by: ZLD Nov 2 2015, 01:12 AM

Aw, I'm usually suspicious of those but I'll trust your judgement on this one. Thanks Emily!

Posted by: fred_76 Nov 6 2015, 02:38 PM

Hi!

Here is a composite image of the dark side of Charon, made from 27 photos from lor_0299405829_0x633_sci_3 to lor_0299405907_0x633_sci_3. I used Iris from Christian Buil to remove an artificial flat, align the images, then the dark banding is removed with a FFT denoising. I applied a very slight deconvolution. Note the Airy pattern on the bright star : this is not a FFT nor a deconvolution artifact as it already appears when I stack the raw (aligned) images. The dark areas around Charon and the bright stars are artifacts caused by the FFT debanding.

At least 4 structures appear, two dark, two bright.

A dark structure on the top of the image seems to be quite elongated. The central dark structure is almost circular. The faint bright structure in the bottom left is also quite circular and the long one on the limb may be a sign of some mountains/faults.



Here is the flat that I calculated :



Fred

Posted by: Phil Stooke Nov 6 2015, 03:46 PM

One problem I see with this - sorry to say - is that only about half of the night side of Charon should be illuminated by Pluto. Some of your mottled pattern on Charon is the same as the pervasive mottling in the sky beyond it.

Phil

Posted by: ZLD Nov 6 2015, 05:23 PM

Yeah, it looks like mostly noise to me Fred, sorry. I've been working with these images too and its a lot of frustration with how time consuming it can be, only to come out with a great rendered enhancement of the background noise. You may have some features there, but I wouldn't say its conclusive.

Posted by: fredk Nov 6 2015, 05:33 PM

To be fair to (other) Fred, there does appear to be some correlation between bright regions in the Pluto-lit side of Charon in his image and http://www.unmannedspaceflight.com/index.php?s=&showtopic=8072&view=findpost&p=227720. But using only 27 frames vs all 80 or 90 by Machi means Fred's is definitely noisier.

Posted by: fred_76 Nov 6 2015, 06:38 PM

You are right saying the noise is at the same level as the structures I noticed.

I took "only" 27 photos because they were shot at the same time interval, 2015-07-17 from 02:25:10 UTC to 02:26:25 UTC. I didn't add the other photos as they were shot 2 hours before and during that period, NH moved a lot...

Posted by: Herobrine Nov 6 2015, 08:16 PM

Here's the full list of LORRI images added to SOC today.
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029906/lor_0299066769_0x630_sci_3.jpg 'NH_APPR_B_6_02':'LORRI 1x1 Hydra', taken:'2015-07-13T04:14:10.779', target:'HYDRA', range:1589303.06429, exposure:0.15
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029906/lor_0299066739_0x630_sci_3.jpg 'NH_APPR_B_6_02':'LORRI 1x1 Hydra', taken:'2015-07-13T04:13:40.779', target:'HYDRA', range:1589718.57176, exposure:0.15
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029907/lor_0299075352_0x630_sci_3.jpg 'PC_MULTI_MAP_B_18_02_L1':'4 Charon LORRI', taken:'2015-07-13T06:37:13.779', target:'CHARON', range:1461965.39554, exposure:0.15
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029905/lor_0299059452_0x630_sci_2.jpg 'PC_MULTI_MAP_B_17_02_L1':'4 Charon LORRI', taken:'2015-07-13T02:12:13.779', target:'CHARON', range:1679651.17329, exposure:0.15
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029905/lor_0299059451_0x630_sci_2.jpg 'PC_MULTI_MAP_B_17_02_L1':'4 Charon LORRI', taken:'2015-07-13T02:12:12.779', target:'CHARON', range:1679664.85454, exposure:0.15
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029905/lor_0299059450_0x630_sci_3.jpg 'PC_MULTI_MAP_B_17_02_L1':'4 Charon LORRI', taken:'2015-07-13T02:12:11.779', target:'CHARON', range:1679678.53579, exposure:0.15
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029906/lor_0299066489_0x630_sci_2.jpg 'NH_APPR_B_6_01':'LORRI 1x1 Nix', taken:'2015-07-13T04:09:30.779', target:'NIX', range:1538443.31022, exposure:0.15
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029906/lor_0299066459_0x630_sci_2.jpg 'NH_APPR_B_6_01':'LORRI 1x1 Nix', taken:'2015-07-13T04:09:00.779', target:'NIX', range:1538856.34744, exposure:0.15
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029905/lor_0299059449_0x630_sci_3.jpg 'PC_MULTI_MAP_B_17_02_L1':'4 Charon LORRI', taken:'2015-07-13T02:12:10.779', target:'CHARON', range:1679692.21703, exposure:0.15
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230832_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:33.656', target:'PLUTO', range:692636.606766, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230829_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:30.656', target:'PLUTO', range:692595.31289, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230835_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:36.656', target:'PLUTO', range:692677.900642, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230826_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:27.656', target:'PLUTO', range:692554.019015, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230820_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:21.656', target:'PLUTO', range:692471.431266, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230823_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:24.656', target:'PLUTO', range:692512.72514, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230811_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:12.656', target:'PLUTO', range:692347.549643, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230814_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:15.656', target:'PLUTO', range:692388.843518, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230817_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:18.656', target:'PLUTO', range:692430.137391, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230808_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:09.656', target:'PLUTO', range:692306.25577, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230925_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:50:06.656', target:'PLUTO', range:693916.717041, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230922_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:50:03.656', target:'PLUTO', range:693875.423156, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230913_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:54.656', target:'PLUTO', range:693751.541506, exposure:0.4
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http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230904_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:45.656', target:'PLUTO', range:693627.659858, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230907_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:48.656', target:'PLUTO', range:693668.953742, exposure:0.4
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http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230901_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:42.656', target:'PLUTO', range:693586.365976, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230898_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:39.656', target:'PLUTO', range:693545.072094, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230895_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:36.656', target:'PLUTO', range:693503.778213, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230889_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:30.656', target:'PLUTO', range:693421.190451, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230892_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:33.656', target:'PLUTO', range:693462.484333, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230883_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:24.656', target:'PLUTO', range:693338.602691, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230886_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:27.656', target:'PLUTO', range:693379.89657, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230880_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:21.656', target:'PLUTO', range:693297.30881, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230877_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:18.656', target:'PLUTO', range:693256.014931, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230871_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:12.656', target:'PLUTO', range:693173.427173, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230874_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:15.656', target:'PLUTO', range:693214.721051, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230862_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:03.656', target:'PLUTO', range:693049.545536, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230868_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:09.656', target:'PLUTO', range:693132.133293, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230853_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:54.656', target:'PLUTO', range:692925.663903, exposure:0.4
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http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230859_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:49:00.656', target:'PLUTO', range:693008.251658, exposure:0.4
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http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230850_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:51.656', target:'PLUTO', range:692884.370024, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230844_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:45.656', target:'PLUTO', range:692801.782271, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230841_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:42.656', target:'PLUTO', range:692760.488393, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230838_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:48:39.656', target:'PLUTO', range:692719.194518, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230991_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:51:12.656', target:'PLUTO', range:694825.182554, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230994_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:51:15.656', target:'PLUTO', range:694866.476444, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230997_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:51:18.656', target:'PLUTO', range:694907.770332, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230982_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:51:03.656', target:'PLUTO', range:694701.300884, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230985_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:51:06.656', target:'PLUTO', range:694742.594773, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230988_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:51:09.656', target:'PLUTO', range:694783.888663, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230973_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:50:54.656', target:'PLUTO', range:694577.419217, exposure:0.4
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http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230979_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:51:00.656', target:'PLUTO', range:694660.006996, exposure:0.4
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http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231294_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:56:15.656', target:'PLUTO', range:698995.866761, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231291_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:56:12.656', target:'PLUTO', range:698954.572846, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231288_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:56:09.656', target:'PLUTO', range:698913.27893, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231285_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:56:06.656', target:'PLUTO', range:698871.985014, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231282_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:56:03.656', target:'PLUTO', range:698830.691099, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231276_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:57.656', target:'PLUTO', range:698748.103269, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231279_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:56:00.656', target:'PLUTO', range:698789.397183, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231273_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:54.656', target:'PLUTO', range:698706.809355, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231270_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:51.656', target:'PLUTO', range:698665.515441, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231267_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:48.656', target:'PLUTO', range:698624.221528, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231258_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:39.656', target:'PLUTO', range:698500.339786, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231261_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:42.656', target:'PLUTO', range:698541.6337, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231264_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:45.656', target:'PLUTO', range:698582.927613, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231255_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:36.656', target:'PLUTO', range:698459.045873, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231252_0x633_sci_4.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:33.656', target:'PLUTO', range:698417.751961, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231249_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:30.656', target:'PLUTO', range:698376.458048, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231246_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:27.656', target:'PLUTO', range:698335.164138, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231237_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:18.656', target:'PLUTO', range:698211.282402, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231243_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:24.656', target:'PLUTO', range:698293.870225, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231240_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:21.656', target:'PLUTO', range:698252.576314, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231234_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:15.656', target:'PLUTO', range:698169.988492, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231231_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:12.656', target:'PLUTO', range:698128.69458, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231222_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:03.656', target:'PLUTO', range:698004.812849, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231225_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:06.656', target:'PLUTO', range:698046.106759, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231228_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:09.656', target:'PLUTO', range:698087.400671, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231219_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:55:00.656', target:'PLUTO', range:697963.518939, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231216_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:57.656', target:'PLUTO', range:697922.22503, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231213_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:54.656', target:'PLUTO', range:697880.931121, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231210_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:51.656', target:'PLUTO', range:697839.637212, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231207_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:48.656', target:'PLUTO', range:697798.343303, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231204_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:45.656', target:'PLUTO', range:697757.049394, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231201_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:42.656', target:'PLUTO', range:697715.755486, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231198_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:39.656', target:'PLUTO', range:697674.461577, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231189_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:30.656', target:'PLUTO', range:697550.579857, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231192_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:33.656', target:'PLUTO', range:697591.873761, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231195_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:36.656', target:'PLUTO', range:697633.16767, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231186_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:27.656', target:'PLUTO', range:697509.285948, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231183_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:24.656', target:'PLUTO', range:697467.992042, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231180_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:21.656', target:'PLUTO', range:697426.698134, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231171_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:12.656', target:'PLUTO', range:697302.816417, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231174_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:15.656', target:'PLUTO', range:697344.110323, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231177_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:18.656', target:'PLUTO', range:697385.404229, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231168_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:09.656', target:'PLUTO', range:697261.522513, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231165_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:06.656', target:'PLUTO', range:697220.228607, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231162_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:03.656', target:'PLUTO', range:697178.934701, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231159_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:54:00.656', target:'PLUTO', range:697137.640797, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231156_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:57.656', target:'PLUTO', range:697096.346893, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231153_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:54.656', target:'PLUTO', range:697055.052988, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231150_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:51.656', target:'PLUTO', range:697013.759084, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231144_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:45.656', target:'PLUTO', range:696931.171277, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231147_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:48.656', target:'PLUTO', range:696972.465181, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231141_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:42.656', target:'PLUTO', range:696889.877375, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231138_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:39.656', target:'PLUTO', range:696848.583471, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231135_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:36.656', target:'PLUTO', range:696807.289569, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231129_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:30.656', target:'PLUTO', range:696724.701763, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231132_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:33.656', target:'PLUTO', range:696765.995667, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231126_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:27.656', target:'PLUTO', range:696683.407862, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231120_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:21.656', target:'PLUTO', range:696600.820061, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231117_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:18.656', target:'PLUTO', range:696559.526159, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231123_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:24.656', target:'PLUTO', range:696642.113961, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231114_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:15.656', target:'PLUTO', range:696518.232258, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231111_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:12.656', target:'PLUTO', range:696476.938358, exposure:0.4
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http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231102_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:03.656', target:'PLUTO', range:696353.056659, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231099_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:53:00.656', target:'PLUTO', range:696311.762758, exposure:0.4
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http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231096_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:52:57.656', target:'PLUTO', range:696270.46886, exposure:0.4
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http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231054_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:52:15.656', target:'PLUTO', range:695692.354298, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231048_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:52:09.656', target:'PLUTO', range:695609.766508, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231045_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:52:06.656', target:'PLUTO', range:695568.472612, exposure:0.4
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http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231018_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:51:39.656', target:'PLUTO', range:695196.827572, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231015_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:51:36.656', target:'PLUTO', range:695155.53368, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231006_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:51:27.656', target:'PLUTO', range:695031.652006, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231009_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:51:30.656', target:'PLUTO', range:695072.945897, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231012_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:51:33.656', target:'PLUTO', range:695114.239788, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231003_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:51:24.656', target:'PLUTO', range:694990.358114, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299231000_0x633_sci_2.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:51:21.656', target:'PLUTO', range:694949.064224, exposure:0.4
http://pluto.jhuapl.edu/soc/Pluto-Encounter/data/pluto/level2/lor/jpeg/029923/lor_0299230964_0x633_sci_3.jpg 'P_DEEPIM':'Deep 2.4-sigma LORRI mosaic of Pluto nightside, in one frame', taken:'2015-07-15T01:50:45.656', target:'PLUTO', range:694453.537555, exposure:0.4


Edit: A bunch of Pluto shots showed up later
Edit 2: And then more Pluto shots. Suddenly wishing I'd posted this in the Pluto thread instead.
Edit 3: Even more Pluto shots published
Edit 4: Way, way, way, more Pluto shots

Posted by: Phil Stooke Nov 11 2015, 05:49 PM

Recent image releases have given us really nice views of Charon as it rotates. In this set of images I have taken 4 frames from each sequence, enlarged x2, done some contrast stretching and sharpening and merged the results. Better results will come from the PDS versions, but even here a lot of interesting detail can be seen in the areas not visible during closest approach.

Phil






Posted by: Phil Stooke Nov 11 2015, 06:06 PM

Two more, but these are only pairs of images rather than sets of four frames, so they are less clear.

Phil





Posted by: MarcF Jan 21 2016, 06:32 PM

Not much to see, but nice picture of Charon night side in Pluto-shine:
https://www.nasa.gov/image-feature/charon-s-night-side

Posted by: alan Feb 8 2016, 08:35 PM

http://www.hou.usra.edu/meetings/lpsc2016/pdf/1647.pdf

Posted by: alan May 13 2016, 06:46 PM

Colorized DEM of Charon's encounter hemisphere

https://twitter.com/NewHorizonsIMG/status/727604663781052416

Posted by: JRehling May 13 2016, 07:52 PM

The DEM is stunning. It looks like the crust on either side of Serenity Chasma consists of blocks that tilted away from the chasma as it formed, causing the inward edges to rise. And that's a good time to remember that the crust there is a lot less dense than the rocks of inner solar system objects and the force of gravity there is less than on many familiar bodies; e.g., about 17% of the Moon's gravity.

Posted by: Roman Tkachenko Sep 13 2016, 04:22 AM

Some time ago I've made this 3D visualisation of Charon's Serenity Chasma. Enjoy smile.gif
https://www.youtube.com/watch?v=AzNXXvBmY7s

Posted by: machi Dec 13 2016, 10:29 PM

Best global view of Charon from New Horizons at resolution 650 m/pix in color (both grayscale and color images from MVIC):

https://www.flickr.com/photos/109586958@N03/31591468826/

Posted by: HSchirmer Dec 13 2016, 11:36 PM

QUOTE (machi @ Dec 13 2016, 11:29 PM) *
Best global view of Charon from New Horizons at resolution 650 m/pix in color (both grayscale and color images from MVIC):
[/url]


Amazing how it's like Ben Franklin's bifocals - top looks very Martian, bottom looks very Lunar.

Posted by: Explorer1 Dec 13 2016, 11:46 PM

That 'moat mountain' is just wild from this angle. Amazing work machi! New desktops aplenty...

Posted by: nprev Dec 14 2016, 04:48 AM

Incredible. A few years ago Charon was just a small bump of pixels, and now this. Outstanding work, Daniel. smile.gif

Posted by: bkellysky Dec 14 2016, 10:52 PM

[quote name='machi' date='Dec 13 2016, 05:29 PM' post='233720']
Best global view of Charon from New Horizons at resolution 650 m/pix in color (both grayscale and color images from MVIC):
When I saw this, it seemed like the number of pixels in a photo I had of our Moon.

Click to get the full size version to compare with Machi's Charon.
This is our moon, taken with a Canon XS through an 200mm dobsonian reflector telescope at about 800 m/pix.
It's in color, but not processed at all. So the resolution at the level of a few pixels is fuzzier than the New Horizons photo.
The human eye, through this telescope could see some smaller objects; in part by adjusting better for the large range of brightness.
But perhaps this is how our moon can be seen at the resolution of photos from Charon.

I made a rough measurement of the width of the part of the moon in the photo on google moon and divided it into the number of pixels in the photo.
bob

Posted by: Sean Jul 26 2017, 11:16 AM

Here is a video using elevation data, b+w texture blended with a conformed version of an RGB map by Steve Albers & John Van Vliet

https://flic.kr/p/X1aWa1

I discovered the authors of the RGB pass after the video was completed, I will be amending the video with updated credits soon.





Posted by: Xcalibrator Jul 27 2017, 02:03 AM

Stunning, Sean. The topographic relief really hits you in pseudo-3D.

Posted by: scalbers Jul 27 2017, 06:41 PM

Nice to see Charon come alive like this. One thing to note is that at least in my mapping so far, there is some higher resolution imagery that can still be incorporated from the mosaic linked below (and perhaps from Machi's views a few posts up).

https://www.nasa.gov/feature/pluto-s-big-moon-charon-reveals-a-colorful-and-violent-history

EDIT: Here is a grayscale 8K map with the higher resolution mosaic added from the above link. I'll try adding the colors later.

http://stevealbers.net/albers/sos/pluto/charon/charon_rgb_cyl_8kbw.png

Posted by: JRehling Jul 28 2017, 01:00 AM

That's a beauty of an animation. Amazing work – and it's amazing that we have the data to create it for such a small, distant world.

Posted by: scalbers Aug 17 2017, 01:44 PM

Here is the 8K Charon map in color: http://stevealbers.net/albers/sos/pluto/charon/charon_rgb_cyl.jpg

Posted by: Sean Aug 17 2017, 03:03 PM

Thanks for posting these Steve.

Posted by: nprev Aug 18 2017, 02:19 AM

Beautiful.

Any chance of a polar projection, Steve? I'm fascinated by those two large impact basins up north.

Still surprised by just how active Charon once was.

Posted by: scalbers Aug 18 2017, 07:54 PM

Thanks nprev - here's a preliminary version of the northern hemisphere using an azimuthal equidistant projection.



One of the basins appears to sport just half of a raised rim. The dark mottled areas also look interesting just outside the dark brown polar hood.

Posted by: Phil Stooke Aug 18 2017, 09:31 PM

Polar version of Steve's map, just the northern hemisphere. This an azimuthal equidistant projection. The outer edge is the equator.

Phil


Posted by: nprev Aug 19 2017, 12:21 AM

Awesome. Thanks, Phil & Steve.

Hmm. In this view, it looks like the very large squarish basin is trapping the red stuff (thiolins?) along the edges of its rim. Aeolian deposition, despite the exceedingly thin almost-hate-to-call-it-an-atmosphere?

Posted by: HSchirmer Aug 19 2017, 01:52 PM

QUOTE (nprev @ Aug 19 2017, 12:21 AM) *
Awesome. Thanks, Phil & Steve.

Hmm. In this view, it looks like the very large squarish basin is trapping the red stuff (thiolins?) along the edges of its rim. Aeolian deposition, despite the exceedingly thin almost-hate-to-call-it-an-atmosphere?


It might just be that the "goldilocks zone" for tholins is the inner ridge slope?
Those areas might happen to be where the best combination of
cold-trapping to accumulate methane and sunlight to create tholins?
Sunnier might areas warm quickly and lack methane, shadier areas don't get enough light to drive the tholin reaction

-Post script-
It just occurred to me, a polar crater with rim illumination rotating around (and precessing)
could drive local sublimation and deposition which stay within the cold-trap crater; a quasi-closed system.
Sort of solid to gas phase sohlex-extractor where the solvent flows around and around,
allowing a single batch of solvent to interact over and over and become more and more concentrated-



Here, could be methane ice sublimating around the rim over and over,

Posted by: JRehling Aug 21 2017, 04:01 AM

Remember, Charon shares Pluto's extreme axial tilt. That polar basin spends plenty of time (e.g. more than a human lifespan) in direct, nonstop sunlight. It'll be comparatively rare that it is "polar" in our climatological sense. But – who knows – that may be irrelevant. The reddish stain may have been added in one week for all we know. But if it does pertain to climate, the climate of that area is to spend ~125 years in light, then the same duration in dark.

But, check out:

http://www.nature.com/nature/journal/v539/n7627/full/nature19340.html?foxtrotcallback=true

I wish we knew more about Charon's magnetic field… Or, it may have had one once, that's long since been lost.

One thing to keep in mind about the thinness of Charon's "atmosphere" is that whatever it might carry aloft would be, itself, light proportionally to the air. Triton had plumes being blown in its atmosphere.

Posted by: HSchirmer Aug 21 2017, 02:37 PM

QUOTE (JRehling @ Aug 21 2017, 04:01 AM) *
Remember, Charon shares Pluto's extreme axial tilt. That polar basin spends plenty of time (e.g. more than a human lifespan) in direct, nonstop sunlight. It'll be comparatively rare that it is "polar" in our climatological sense.
(snip)
One thing to keep in mind about the thinness of Charon's "atmosphere" is that whatever it might carry aloft would be, itself, light proportionally to the air. Triton had plumes being blown in its atmosphere.


Yep, I was thinking along those lines, as there's some evidence for an atmosphere and liquid nitrogen around 800-900 million years ago, due to orbit tilt and procession.
IIRC the (edit out- highest temperature) thickest atmosphere should have occurred when there is
equatorial sunshine and "polar" nights, but I'd have to go back and double check to be sure.

Posted by: Roman Tkachenko Feb 19 2020, 09:36 AM

Looking back at a crescent Charon.


Left: An unprocessed stack of six Charon's crescent LORRI images.
Right: A processed stack of the images after a scattered light removal.


Left: Simulation
Right: Charon's crescent as seen by New Horizons.

Posted by: TrappistPlanets May 16 2021, 08:24 PM

there is something that all charon maps bug me about, and that is missing coverage
but this map below fixes that

credits to Bjorn Jonsson, new horisons, usgs astropedia, Moore, J. M., McKinnon, W. B., Spencer, J. R., Howard, A. D., Schenk, P. M., Beyer, R. A., Nimmo, F., et al. (2016). The Geology of Pluto and Charon Through the Eyes of New Horizons. Science, 351(6279), 1284-1293. https://10.1126/science.aad7055

Schenk, P., Beyer, R. A., McKinnon, W. B., Moore, J. M., Spencer, J. R., White, O. L., New Horizons Geology and Geophysics Investigation Team, et al. (2018). Breaking Up is Hard to Do: Global Cartography and Topography of Charon from New Horizons. Icarus, 315, 124-145. https://doi.org/10.1016/j.icarus.2018.06.010 for the map below




Posted by: Roman Tkachenko Jun 7 2021, 11:47 AM

Charon's Serenity Chasma in 3D




Posted by: HSchirmer Jun 8 2021, 02:17 AM

QUOTE (Roman Tkachenko @ Jun 7 2021, 11:47 AM) *
Charon's Serenity Chasma in 3D




Amazing work - that does make one thing clear - it looks like the thicker crust broke and flopped like an Oreo cookie in milk.
with the 3d perspective, the edges match, but it looks like an inter-gap piece broke off from the top, slushed down, and the froze in place.

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