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New Horizons at Io
volcanopele
post Feb 24 2007, 07:53 PM
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Since the New Horizons Jupiter Encounter thread is already getting pretty long, I decided to create a thread dedicated to New Horizons' observations of the most interesting object in the solar system: Io. Info on upcoming observations comes from the jupiter_timeline_static.xls document john_s posted, and the preview images are from Celestia (note that each image is scaled so that the pixel scale is ~correct, and represents a smaller FOV than LORRI)

Today, February 24, New Horizons conducts three observations of Io with the LORRI camera as well some observations of Io's atmosphere with ALICE. These observations have the lowest phase angle for Io of the entire encounter. Phase angle continues to increase as NH approaches Jupiter and Io.

Attached Image

The first observation, ISunMon1, shows Io's sub-Jovian hemisphere (Clat=5.5 S, Clon=340.2 W) from a distance of 7,856,307 km. The resolution with LORRI would be 38.8 km/pixel. Pele is on the limb at lower right and Masubi is on the limb at lower left. Ra Patera is near center.

Attached Image

The second observation, ISunMon2, also shows Io's sub-Jovian hemisphere (Clat=5.5 S, Clon=15.1 W) from a distance of 7,575,510 km. The resolution with LORRI would be 37.5 km/pixel. The Tvashtar plume might be poking above the limb at upper left.

Attached Image

The third observation, ISunMon3, shows Io's leading hemisphere (Clat=6.0 S, Clon=84.7 W) from a distance of 6,627,459 km. The resolution with LORRI would be 32.8 km/pixel. The Zamama plume might be visible just above center on the left limb.

It only gets better from here. Not sure how NH downlink works, but there is a DSN window right after the last Io observation, hopefully at least one frame from each observation will be returned. Maybe they can do the Huffman window right around where Io is... Tomorrow contains four more observations of Io, highlighting Pele and an eclipse.


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dilo
post Mar 1 2007, 11:07 PM
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Great colorization, Stu!!!
Waiting for the full picture...
(sad to think we will not see such kind of images for a while, even if with the most advanced AO telescopes the particular geometry/lighting which make possible to see such volcanoes and mountains aren't possible from Earth!) sad.gif


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Posts in this topic
- volcanopele   New Horizons at Io   Feb 24 2007, 07:53 PM
- - elakdawalla   Jason, in case you didn't see it, here's t...   Feb 24 2007, 08:02 PM
- - volcanopele   Cool, certainly looks like it could be Tvashtar. ...   Feb 24 2007, 08:28 PM
- - john_s   More Hubble images now down- the Tvashtar(?) plume...   Feb 24 2007, 09:40 PM
- - volcanopele   That's a good point. Given the phase angles o...   Feb 24 2007, 09:46 PM
- - john_s   QUOTE (volcanopele @ Feb 24 2007, 07:53 P...   Feb 24 2007, 10:58 PM
|- - just-nick   QUOTE (john_s @ Feb 24 2007, 02:58 PM) Th...   Feb 25 2007, 07:09 PM
- - volcanopele   Today, February 25, New Horizons conducts three mo...   Feb 25 2007, 06:52 PM
- - Exploitcorporations   <clink> Tvashtar still has that enormous rin...   Feb 27 2007, 05:43 PM
- - ugordan   Woohoo, 2 new Io images! And an eruption...   Feb 27 2007, 05:48 PM
- - john_s   A little experiment on you guys- we posted the ima...   Feb 27 2007, 05:55 PM
- - Alan Stern   John seems to have a little too much time on his h...   Feb 27 2007, 05:58 PM
|- - John Flushing   QUOTE (mgrodzki @ February 28th, 2007, 07...   Mar 1 2007, 03:31 AM
- - ugordan   Yeah, he'd better get that press release done ...   Feb 27 2007, 06:00 PM
- - Exploitcorporations   Damn. Looks like two of them. Didn't notice Tv...   Feb 27 2007, 06:03 PM
- - ugordan   Umm, where do you see the second plume?   Feb 27 2007, 06:06 PM
- - siravan   Hi eveyone. This is my first post to UMSF. Here is...   Feb 27 2007, 06:07 PM
- - Exploitcorporations   I thought I saw one on the center limb. Didn't...   Feb 27 2007, 06:07 PM
- - john_s   Good eyes, exploitcorporations! There is a ve...   Feb 27 2007, 06:11 PM
|- - JRehling   QUOTE (john_s @ Feb 27 2007, 10:11 AM) Go...   Feb 27 2007, 06:14 PM
- - Bjorn Jonsson   That's spectacular and one can even easily dis...   Feb 27 2007, 06:14 PM
- - Exploitcorporations   Are those a couple on the terminator, too? edit...   Feb 27 2007, 06:16 PM
- - john_s   Nope, those are mountains on the terminator   Feb 27 2007, 06:17 PM
- - Bjorn Jonsson   Knowing the viewing and lighting geometry or the *...   Feb 27 2007, 06:19 PM
- - siravan   Here is the plume image.   Feb 27 2007, 06:20 PM
- - volcanopele   Note the double ring around Masubi! GREAT IMA...   Feb 27 2007, 06:24 PM
- - DEChengst   Great pics, thanks for putting them up so quickly....   Feb 27 2007, 06:25 PM
|- - john_s   QUOTE (DEChengst @ Feb 27 2007, 06:25 PM)...   Feb 27 2007, 06:38 PM
|- - DEChengst   QUOTE (john_s @ Feb 27 2007, 07:38 PM) Ap...   Feb 27 2007, 06:55 PM
- - Exploitcorporations   Those mountains look from the map like they might ...   Feb 27 2007, 06:27 PM
- - ugordan   Great catch on the 9 c'clock plume, Exploitcor...   Feb 27 2007, 06:29 PM
|- - Bjorn Jonsson   QUOTE (ugordan @ Feb 27 2007, 06:29 PM) B...   Feb 27 2007, 07:02 PM
|- - SFJCody   QUOTE (Bjorn Jonsson @ Feb 27 2007, 07:02...   Feb 27 2007, 08:12 PM
- - remcook   sorry, but I have to add another wow! happy da...   Feb 27 2007, 06:33 PM
- - Exploitcorporations   Looks like Prometheus shows up okay in the short e...   Feb 27 2007, 06:46 PM
|- - lyford   QUOTE (Exploitcorporations @ Feb 27 2007, 10...   Feb 27 2007, 08:00 PM
|- - ustrax   QUOTE (Exploitcorporations @ Feb 27 2007, 06...   Feb 28 2007, 04:41 PM
- - volcanopele   Sorry I have been slacking off on the image previe...   Feb 27 2007, 07:21 PM
- - hendric   Wahoo! Great images everyone. You could have...   Feb 27 2007, 08:24 PM
- - Phil Stooke   "Someone should subtract this image from the ...   Feb 27 2007, 08:28 PM
- - stevesliva   I'm wondering if the big new streak pointing s...   Feb 27 2007, 08:36 PM
- - volcanopele   Interesting ratio, Phil. Looks like something big...   Feb 27 2007, 08:39 PM
- - 4th rock from the sun   Here's a processed image from both exposures, ...   Feb 27 2007, 09:15 PM
- - volcanopele   The map that Bjorn presents includes some Voyager ...   Feb 27 2007, 09:28 PM
|- - JRehling   QUOTE (volcanopele @ Feb 27 2007, 01:28 P...   Feb 27 2007, 10:06 PM
|- - Bjorn Jonsson   QUOTE (volcanopele @ Feb 27 2007, 09:28 P...   Feb 28 2007, 12:30 AM
- - AlexBlackwell   Here is the aforementioned press release.   Feb 27 2007, 09:33 PM
- - ugordan   While trying to match Bjorn's rendered view to...   Feb 27 2007, 09:38 PM
- - volcanopele   Yesterday, February 26, New Horizons conducts one ...   Feb 27 2007, 10:05 PM
- - volcanopele   I know. I just wanted to bring that up because I ...   Feb 27 2007, 10:10 PM
- - volcanopele   Today, February 27, New Horizons conducts three, h...   Feb 27 2007, 10:36 PM
- - belleraphon1   All I can say is WWW!!!!!...   Feb 28 2007, 12:44 AM
- - Tom Tamlyn   I'm surprised that the reference images of Io ...   Feb 28 2007, 01:38 AM
|- - Littlebit   QUOTE (Tom Tamlyn @ Feb 27 2007, 06:38 PM...   Feb 28 2007, 03:03 PM
- - tfisher   Here's a quick flicker gif comparing 4th rock...   Feb 28 2007, 03:32 AM
- - volcanopele   Thought I would take a look into Shango, perhaps t...   Feb 28 2007, 08:11 AM
- - Exploitcorporations   I'm not usually prone to sentimentality(snort)...   Feb 28 2007, 08:36 AM
- - mchan   When the moon hits your eye like a big pizza pie, ...   Feb 28 2007, 09:28 AM
- - djellison   Not sure how close to C/A there will be other Io o...   Feb 28 2007, 02:32 PM
- - ugordan   QUOTE (volcanopele)Will the Pele ring look differe...   Feb 28 2007, 02:35 PM
|- - tedstryk   QUOTE (ugordan @ Feb 28 2007, 02:35 PM) I...   Feb 28 2007, 03:02 PM
- - ugordan   @Bjorn: Interestingly, I ran into the same kind o...   Feb 28 2007, 05:44 PM
|- - stevesliva   QUOTE (ugordan @ Feb 28 2007, 12:44 PM) I...   Feb 28 2007, 06:03 PM
|- - Bjorn Jonsson   QUOTE (ugordan @ Feb 28 2007, 05:44 PM) @...   Feb 28 2007, 07:22 PM
- - ugordan   I get differences on the order of >100 km in th...   Feb 28 2007, 06:10 PM
- - volcanopele   Now back to everyone's favorite moon... Today...   Feb 28 2007, 09:46 PM
- - mgrodzki   on planetary radio last week, emily mentioned that...   Mar 1 2007, 12:18 AM
- - mgrodzki   volcanopele sort of adressed my question while i w...   Mar 1 2007, 12:20 AM
|- - JRehling   Not all is lost for good temporal coverage of Io...   Mar 1 2007, 12:35 AM
- - mgrodzki   it would seem so… damn, they should have been plan...   Mar 1 2007, 03:41 AM
- - paxdan   BBC report about the "massive 150 m, 495 ft h...   Mar 1 2007, 08:30 AM
- - ugordan   ^^^ Mega LOL at that.   Mar 1 2007, 08:36 AM
- - paxdan   So I checked, and the BBC story said it was ...   Mar 1 2007, 09:20 AM
- - general   It has been corrected   Mar 1 2007, 09:57 AM
- - ugordan   WOW!!! Tvashtar's Plume! Che...   Mar 1 2007, 08:53 PM
|- - TritonAntares   QUOTE (ugordan @ Mar 1 2007, 09:53 PM) .....   Mar 1 2007, 10:31 PM
- - volcanopele   COOL! Looks like their are two plume sources ...   Mar 1 2007, 09:02 PM
- - ugordan   Could we be seeing another plume at around 5:30 on...   Mar 1 2007, 09:08 PM
|- - volcanopele   QUOTE (ugordan @ Mar 1 2007, 02:08 PM) Co...   Mar 1 2007, 09:12 PM
- - ugordan   Here all the visible plumes as well as my candidat...   Mar 1 2007, 09:22 PM
- - volcanopele   Good eyes. With out a lat-lon grid this is diffic...   Mar 1 2007, 09:42 PM
- - ugordan   The 5:30 feature definitely makes for a more convi...   Mar 1 2007, 09:59 PM
- - Bjorn Jonsson   WOW!! This may be the most dramatic image ...   Mar 1 2007, 10:05 PM
- - Stu   Hands up confession time... I've never really ...   Mar 1 2007, 10:08 PM
|- - john_s   QUOTE (Stu @ Mar 1 2007, 10:08 PM) Imagin...   Mar 1 2007, 10:57 PM
- - ugordan   After closest approach, Io's quickly reduced t...   Mar 1 2007, 10:12 PM
- - Stu   RE: New Horizons at Io   Mar 1 2007, 10:38 PM
- - dilo   Great colorization, Stu!!! Waiting for...   Mar 1 2007, 11:07 PM
- - Bjorn Jonsson   Here is a properly shaded version with exaggerated...   Mar 1 2007, 11:15 PM
- - Stu   RE: New Horizons at Io   Mar 1 2007, 11:27 PM
|- - ustrax   artifact or another plume?   Mar 2 2007, 09:24 AM
- - volcanopele   For the mountain lovers, here's a graphic labe...   Mar 2 2007, 12:16 AM
- - AlexBlackwell   John S. has a nice new glog entry.   Mar 2 2007, 02:12 AM
- - Exploitcorporations   Thanks, VP! Io's mountain landforms are st...   Mar 2 2007, 02:41 AM
- - tfisher   Here's another take on the changes at Masubi s...   Mar 2 2007, 03:52 AM
- - tfisher   Here's my take on colorization of the latest i...   Mar 2 2007, 04:28 AM
- - volcanopele   You have to be kinda careful about colorizing high...   Mar 2 2007, 04:41 AM
- - remcook   is this above-average activity on Io or are there ...   Mar 2 2007, 10:24 AM
- - ugordan   I'd say it's always pretty active. Maybe n...   Mar 2 2007, 10:26 AM
- - Ant103   A "seven error game" The image of t...   Mar 2 2007, 11:18 PM
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