New Horizons at Io |
New Horizons at Io |
 Feb 24 2007, 07:53 PM
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 Senior Member  Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23  |
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.
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.
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.
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. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Mar 2 2007, 03:52 AM
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Member Group: Members Posts: 204 Joined: 29-June 05 Member No.: 421 |
Here's another take on the changes at Masubi since Galileo. Comparison again is to the Galileo frame that volcanopele posted, flipping back and forth with the latest new LORRI frame. It looks like the current Masubi eruption is spewing primarily from what used to be that corner bend of Masubi Fluctus, with maybe some secondary plume(s) to the east.
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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 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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