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Unmanned Spaceflight.com _ Juno _ Juno, perijove 10

Posted by: Gerald Dec 18 2017, 12:15 PM

Data of Juno's Perijove-10 are going to be downlinked.

Here is a tiny 6000-fold time-lapsed simulation from 2017-12-16T16:30:00.000 to 2017-12-16T20:00:00.000:

It shows, that during approach, Jupiter's night side has come into JunoCam's field of view, first. Then there have been some interesting new perspectives, before Jupiter's south polar region has been in JunoCam's view during departure.
The simulation is based on preliminary, and on some reconstructed SPICE data. Timing of actual image data differ from the stills of the above tiny simulation.

Posted by: Adam Hurcewicz Dec 18 2017, 01:40 PM

I can't wait for new pictures ! smile.gif

Posted by: Bjorn Jonsson Dec 18 2017, 09:52 PM

This is also interesting (from https://www.missionjuno.swri.edu/junocam/voting?id=8 ):

QUOTE
We are also reducing the amount of compression for the closest images to minimize compression artifacts.

The area around latitude 40 degrees north has been especially photogenic since Juno's arrival (I don't know if images of that area qualify as "closest images" though).

Posted by: Gerald Dec 18 2017, 10:17 PM

Near closest approach, the contrast turned out to be pretty low during previous flybys, resulting in DCT block artifacts of approximately the size of potentially interesting features, and a slow flyby movie would also degrade in quality due to the visibility of the compression artifacts. Additionally, near the latitudes of the GRS, there seem to have formed large turbulent features before PJ9 that are worth images of good quality. The geometry of future perijoves will worsen for flyby animation purposes. So, this may by one of the last opportunities to take an according sequence.
Regarding observations of the polar CPCs, we'll likely get better results for the south than for the north due to image geometry and illumination.

Regarding latitude: The correlation of time and latitude won't be as strict as it has been for early orbits. This is another reason, why voting for features on certain latitudes would be less applicable.

Posted by: Bjorn Jonsson Dec 18 2017, 10:33 PM

QUOTE (Gerald @ Dec 18 2017, 10:17 PM) *
The geometry of future perijoves will worsen for flyby animation purposes. So, this may by one of the last opportunities to take an according sequence.

Do you know if the geometry gets better again late in the mission?

Posted by: Gerald Dec 18 2017, 10:46 PM

Provided, Juno gets an extension until 2021, and the instruments will still be healthy, the answer is yes, the geometry will improve again.

Posted by: Kevin Gill Dec 19 2017, 10:03 PM

The Perijove 10 images are now being added to the raw gallery.


 

Posted by: Kevin Gill Dec 19 2017, 11:07 PM

A quick processing of four of the Perijove 10 images.


 

Posted by: Gerald Dec 20 2017, 03:16 AM

With some delay, http://junocam.pictures/gerald/uploads/20171220/. The second half of the PJ-10 close-up images are still to be downlinked.
This version is rendered without 3D information; so the close-ups are misaligned a bit. Image #002 shows two of the moons, the larger one should be Io, according to the title. Might be, that there is more, but it's what I've seen at first glance. Of course, there are lots of energetic particle hits.

Posted by: Sean Dec 20 2017, 11:20 AM

This already looks like an exceptional set Gerald...and the lack of artifacts on closest approach is also very promising.

Great early processing by Kevin as well!

I can only imagine what Matt has up his sleeve...

Posted by: Gerald Dec 20 2017, 01:13 PM

A tiny animation of the RGB images available thus far:


And here a larger version of some of them, first #018, and #020:



The images show some image noise, since they have been taken with TDI 1. There are also many energetic particle hits.

Last night, I've simply been too tired to render reasonable products. A small glitch (forgot to copy&paste Juno's rotation period from the image adjustment batch into the rendering batch) prevented an overnight run.

Posted by: Gerald Dec 20 2017, 01:16 PM

PJ-10, #021:


Posted by: Gerald Dec 20 2017, 01:21 PM

#022:


Posted by: Gerald Dec 20 2017, 01:23 PM

#023:


Posted by: Gerald Dec 20 2017, 01:29 PM

#024:


Posted by: Gerald Dec 20 2017, 01:42 PM

Rendition of the very close-ups takes a little longer.
Here #025:


Posted by: Gerald Dec 20 2017, 02:02 PM

#026:


Posted by: Gerald Dec 20 2017, 02:32 PM

#027, and #028:


Posted by: Gerald Dec 20 2017, 02:54 PM

... and #031:



All images of this series are reprojected to the respective image stop time.

Posted by: Gerald Dec 20 2017, 05:31 PM

http://junocam.pictures/gerald/uploads/20171220a/. Most of them are also submitted to the missionjuno website.

Posted by: Kevin Gill Dec 20 2017, 08:13 PM

Here's the remainder of my 1st pass of the Perijove 10 data that's available.

I've been putting the full versions up on Flickr: https://www.flickr.com/photos/kevinmgill/albums/72157672426118932

And another more artistic view of Juno




 

Posted by: Sean Dec 20 2017, 09:01 PM

Some details from Gerald's pass on Perijove 10...

PJ10_022
https://flic.kr/p/HKsgLk


PJ10_023
https://flic.kr/p/21mM1KP

https://flic.kr/p/21BPMDm

https://flic.kr/p/21BzqZd


PJ10_024
https://flic.kr/p/21mSaeT


PJ10_025
https://flic.kr/p/21mS7yx





Posted by: Sean Dec 21 2017, 06:17 PM

*update...re-ordered*

PJ10_021 [G.Eichstadt]
https://flic.kr/p/HN125v



PJ10_022
https://flic.kr/p/22Jb1bZ



PJ10_023
https://flic.kr/p/EAN6dy







Posted by: Sean Dec 22 2017, 04:39 PM

Another from Gerald's awesome source image...

PJ10_24
https://flic.kr/p/22KMFx8

PJ10_024_Detail002
https://flic.kr/p/D7x8XB



Posted by: Kevin Gill Dec 22 2017, 07:47 PM

Updates to PJ10 images with improved color. Alignment is still a bit rougher than I'd like.

 

Posted by: Floyd Dec 22 2017, 10:44 PM

Kevin--Like Sean you can start with Gerald's extremely carefully aligned and processed images and just work you magic from there. Gerald was working on his image pipeline way before Juno arrived in orbit and has been improving it with each orbit. But, if you want to do it all on your own, more power to you as your are making impressive images.

Posted by: Gerald Dec 23 2017, 01:50 AM

http://junocam.pictures/gerald/uploads/20171223/. Those aren't yet properly aligned, since they are rendered without trajectory data nor shape model.
I'm working on a version with trajectory data and shape model. This will likely take a few more hours.

And http://junocam.pictures/gerald/uploads/20171222/. This site may be updated the next few days with more fragments.

Posted by: Kevin Gill Dec 23 2017, 02:20 AM

Floyd, I'm stubbornly working on my own pipeline. :-) Gerald's is far more advanced than my own, but I've been enjoying the work (and I tend to rewrite it every couple months). I do have a number of additions to it in terms of viewing geometry and Spice calculations but they weren't ready for this perijove.

-- Kevin

Posted by: Sean Dec 23 2017, 03:43 AM

I really value Kevin's contributions as they provide an alternative to how I'm interpreting Gerald's images. In some cases I have reviewed what I have done as a result. I would consider his work part of my workflow now! ( Thanks Kev! )

Posted by: Gerald Dec 23 2017, 04:02 AM

I'll provide the second part of PJ-10 in the order the rendition is completed, starting with #44 and #45.


Posted by: Gerald Dec 23 2017, 04:06 AM

#46, and #38:


Posted by: Gerald Dec 23 2017, 04:11 AM

#47, #31, #39:


Posted by: Gerald Dec 23 2017, 04:22 AM

#40, #48, #49:



Posted by: Gerald Dec 23 2017, 04:26 AM

#41, #42, #32:


Posted by: Gerald Dec 23 2017, 04:35 AM

#33:


Posted by: Gerald Dec 23 2017, 04:50 AM

#34, #36:


Posted by: Gerald Dec 23 2017, 04:51 AM

... and #37:


Posted by: Gerald Dec 23 2017, 07:04 AM

http://junocam.pictures/gerald/uploads/20171223a/, and submitted to missionjuno.
The images are vertically 180 degrees, and horizontally 60 degrees FOV. They are reprojected to Juno's trajectory position at image stop time.
The images are decompanded, approximately illumination-adjusted according to an illumination model inferred from PJ06 TDI-2 images, gamma-streched to the 4th power of radiometrical data, mostly patched from repetitive camera artifacts, and approximately exposure-adjusted based on the 99.9% quantile.

Posted by: Kevin Gill Dec 23 2017, 07:41 PM

Overview of Perijove 10 using images I've processed so far.

Full Size: https://flic.kr/p/22MXEhF


 

Posted by: Sean Dec 25 2017, 05:13 AM

PJ10_037 [G.Eichstadt]
https://flic.kr/p/22Na6Ey

PJ10_038
https://flic.kr/p/22Ng2Jf

Process...
Upscale, color balance, levels pass, masked sharpen, masked exposure, blended exposure, repairs, edge fills, glow, downscale

Posted by: Gerald Dec 25 2017, 10:46 AM

http://junocam.pictures/gerald/uploads/20171222/ partially updated.
https://www.youtube.com/watch?v=rMr_xcPdCrg is online.

... continuing next year ...

Posted by: avisolo Dec 25 2017, 12:33 PM

THANKS SO MUCH GERALD FOR YOUR STELLAR WORK IN ADVANCING THE CAUSE OF ENLIGHTENMENT FOR ALL HUMANITY!

Here's my humble take on your movie:)
https://vimeo.com/248700527

Happy Holidays & New Year,
Avi

Posted by: Sean Dec 26 2017, 05:05 AM

Click thru for a quick retime on Gerald's PJ10 animation.

https://streamable.com/1qgpy

The purpose here was to test animated masks between separate shots in order to fill out the frame. There is work to be done to blend exposure differences as well as the usual processing.

Posted by: Sean Dec 28 2017, 12:38 PM

PJ10_039 [G.Eichstadt]
https://flic.kr/p/EPDNpb




Posted by: Bjorn Jonsson Dec 30 2017, 07:13 PM

Here are my versions of image PJ10_028. I recently made minor improvements to my processing. The biggest difference is that now I no longer 'lose' the fuzzy and bluish horizon at the limb in the hi-res images as as result of the processing (the limb isn't sharply defined in these images as in my earlier images). First three approximately true color/contrast versions:



Notice the bluish horizon at the limb, especially in the central image. This is Jupiter's blue sky.

And versions with enhanced colors, contrast and sharpness:



Juno was only 4420 km above Jupiter's clouds. This is especially obvious in the central image which has a field of view of 70 degrees.

The image below shows Jupiter's blue sky at the limb; this is an approximately true color/contrast image. This image has a field of view of 20 degrees. This corresponds to an enlargement by a factor of ~3 compared to the original framelets.


And finally a subset of the relevant metadata:

IMAGE_TIME = 2017-12-16T17:59:33.468
MISSION_PHASE_NAME = PERIJOVE 10
PRODUCT_ID = JNCE_2017350_10C00028_V01
SPACECRAFT_ALTITUDE = 4420.2
SPACECRAFT_NAME = JUNO
SUB_SPACECRAFT_LATITUDE = 5.7721
SUB_SPACECRAFT_LONGITUDE = 297.5258
TITLE = North Equatorial Belt, southern edge
Resolution at nadir: ~3.0 km/pixel

Posted by: Gerald Jan 1 2018, 08:16 PM

Thanks, AviSolo!
The vast majority of the merits ought to go to the many people working in the background, who make all this possible!
A happy and successful year 2018 to all of you!

I'm also looking forward to the creativity of the image processing community, which will contribute to the capabilities of all of us.
Björn's blue sky is a first interesting item to add; thus far, I've obtained similar results only unintentionally, when I worked slightly inaccurately.

---

In the meanwhile, most of the relevant http://junocam.pictures/gerald/uploads/20171222/ are online (the site of 2017-12-22 is updated).

Posted by: Bjorn Jonsson Jan 3 2018, 10:50 PM

QUOTE (Gerald @ Jan 1 2018, 08:16 PM) *
I'm also looking forward to the creativity of the image processing community, which will contribute to the capabilities of all of us.
Björn's blue sky is a first interesting item to add; thus far, I've obtained similar results only unintentionally, when I worked slightly inaccurately.

In a way, what I did was 'intentionally inaccurate'. I simply increased Jupiter's radii by 200 km when reprojecting the framelets to simple cylindrical projection and also when rendering the images. By doing this I don't lose the fuzzy/hazy limb visible in the original framelets. This requires very accurate pointing information and a very accurate value for the interframe delay, otherwise you 'lose' the blue sky at the southern and/or northern limb or you get incorrect color at the limb.

Posted by: Bjorn Jonsson Jan 3 2018, 10:58 PM

And here are my versions of the PJ10_024 image (North North Temperate Belt) in approximately true color/contrast and in enhanced color, contrast and sharpness. Image PJ10_024 is centered near latitude 40 degrees north; this area has been especially photogenic in the JunoCam images.





These images do not include a bluish/fuzzy/hazy limb because I started working on them before I started my (successful) experiments involving the limb.

Metadata:

IMAGE_TIME = 2017-12-16T17:47:51.438
MISSION_PHASE_NAME = PERIJOVE 10
PRODUCT_ID = JNCE_2017350_10C00024_V01
SPACECRAFT_ALTITUDE = 8786.9
SPACECRAFT_NAME = JUNO
SUB_SPACECRAFT_LATITUDE = 38.3574
SUB_SPACECRAFT_LONGITUDE = 287.7498
TITLE = North North Temperate Belt
Resolution at nadir: ~5.9 km/pixel

Posted by: tolis Jan 4 2018, 06:19 PM

QUOTE (Bjorn Jonsson @ Jan 3 2018, 11:58 PM) *
And here are my versions of the PJ10_024 image (North North Temperate Belt) in approximately true color/contrast and in enhanced color, contrast and sharpness. Image PJ10_024 is centered near latitude 40 degrees north; this area has been especially photogenic in the JunoCam images.


The round, bluish feature with the dark centre in frame #24 reminds me of the SL-9 impact scars back in 1994.

Posted by: Gerald Jan 4 2018, 10:15 PM

In https://britastro.org/sites/default/files/PJ10_JHR-report-Part-1.pdf, John Rogers (BAA) suggested, that these dark patches might be soot as a result of lighting activity in thunderstorms.

Here a heavily enhanced version of a still of my prelimnary PJ-10 flyby animation:


(I think, that I should upload this to missionjuno.)

Posted by: Sean Jan 12 2018, 09:41 PM

Here is my take on Gerald's PJ10_034...

https://flic.kr/p/FhohTA



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