New Horizons at Io |
New Horizons at Io |
Feb 27 2007, 06:07 PM
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#16
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Member Group: Members Posts: 128 Joined: 10-December 06 From: Atlanta Member No.: 1472 |
Hi eveyone. This is my first post to UMSF. Here is my take on "plume finding" on Io.
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Feb 27 2007, 06:07 PM
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#17
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SewingMachine Group: Members Posts: 316 Joined: 27-September 05 From: Seattle Member No.: 510 |
I thought I saw one on the center limb. Didn't realize that the Tvashtar plume was clearly visible in your pic.
-------------------- ...if you don't like my melody, i'll sing it in a major key, i'll sing it very happily. heavens! everybody's all aboard? let's take it back to that minor chord...
Exploitcorporations on Flickr (in progress) : https://www.flickr.com/photos/135024395@N07/ |
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Feb 27 2007, 06:11 PM
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#18
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Member Group: Members Posts: 706 Joined: 3-December 04 From: Boulder, Colorado, USA Member No.: 117 |
Good eyes, exploitcorporations! There is a very small plume on the center limb (around 9 o'clock)- that's Prometheus.
John. |
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Feb 27 2007, 06:14 PM
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#19
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IMG to PNG GOD Group: Moderator Posts: 2254 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
That's spectacular and one can even easily discern the plume's umbrella-like shape. This is not a surprise because with extreme contrast enhancement plumes are visible in some of the low-phase Voyager 1 clear filter images of Io (for example C1636826.IMQ) despite Voyager 1's more primitive camera.
Makes me wonder what the Voyager 1 Jupiter encounter would have been like had the Internet and powerful computers been common back then and if the image release policy was MER/Cassini/NH-like. One thing is certain: The plumes would have been discovered *before* the Io flyby. |
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Feb 27 2007, 06:14 PM
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#20
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
Good eyes, exploitcorporations! There is a very small plume on the center limb (around 9 o'clock)- that's Prometheus. John. I see the small one at 9 o'clock, the large hazy one at 11 o'clock, and two small features around 2 o'clock which are either big mountains peeking over the limb or smaller forelit plumes. |
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Feb 27 2007, 06:16 PM
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#21
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SewingMachine Group: Members Posts: 316 Joined: 27-September 05 From: Seattle Member No.: 510 |
-------------------- ...if you don't like my melody, i'll sing it in a major key, i'll sing it very happily. heavens! everybody's all aboard? let's take it back to that minor chord...
Exploitcorporations on Flickr (in progress) : https://www.flickr.com/photos/135024395@N07/ |
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Feb 27 2007, 06:17 PM
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#22
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Member Group: Members Posts: 706 Joined: 3-December 04 From: Boulder, Colorado, USA Member No.: 117 |
Nope, those are mountains on the terminator
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Feb 27 2007, 06:19 PM
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#23
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IMG to PNG GOD Group: Moderator Posts: 2254 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
Knowing the viewing and lighting geometry or the *exact* time the image was obtained would be lovely - then I could make a hi-res computer rendering to check what these features near the terminator are...
EDIT: Didn't see John's reply (these are mountains) before I wrote this. |
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Feb 27 2007, 06:20 PM
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#24
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Member Group: Members Posts: 128 Joined: 10-December 06 From: Atlanta Member No.: 1472 |
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Feb 27 2007, 06:24 PM
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#25
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Senior Member Group: Moderator Posts: 3241 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Note the double ring around Masubi!
GREAT IMAGES, john_s!!!! This is such a good day, for other spacecraft images as well... -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Feb 27 2007, 06:25 PM
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#26
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Member Group: Members Posts: 270 Joined: 29-December 04 From: NLA0: Member No.: 133 |
Great pics, thanks for putting them up so quickly. Hoping for more the coming days
Quick question for John about the lecture you'll be giving tomorrow: Will it be recorded and put on the web ? -------------------- PDP, VAX and Alpha fanatic ; HP-Compaq is the Satan! ; Let us pray daily while facing Maynard! ; Life starts at 150 km/h ;
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Feb 27 2007, 06:27 PM
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#27
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SewingMachine Group: Members Posts: 316 Joined: 27-September 05 From: Seattle Member No.: 510 |
Those mountains look from the map like they might be part of the big complex to the east and northeast of Ukko Patera about 10W 40N.
-------------------- ...if you don't like my melody, i'll sing it in a major key, i'll sing it very happily. heavens! everybody's all aboard? let's take it back to that minor chord...
Exploitcorporations on Flickr (in progress) : https://www.flickr.com/photos/135024395@N07/ |
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Feb 27 2007, 06:29 PM
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#28
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Great catch on the 9 c'clock plume, Exploitcorporations! I wrote it off as scattered light/topography, but a little sharpening brings out the nebulosity of the feature nicely.
Bjorn, we already know the time when the image was taken: 2007-02-26 08:40:04 UTC -------------------- |
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Feb 27 2007, 06:33 PM
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#29
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Rover Driver Group: Members Posts: 1015 Joined: 4-March 04 Member No.: 47 |
sorry, but I have to add another wow! happy days
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Feb 27 2007, 06:38 PM
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#30
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Member Group: Members Posts: 706 Joined: 3-December 04 From: Boulder, Colorado, USA Member No.: 117 |
Quick question for John about the lecture you'll be giving tomorrow: Will it be recorded and put on the web ? Apparently slooh.com will be trying to do something to broadcast it- they have a 7-day free trial membership. And siravan's image was interesting, showing the plume in the short-exposure image- I hadn't noticed it in that frame, having concentrated on the long exposure frame. And ugordan's view of Prometheus is better than anything I'd come up with so far. Nice stuff! John. |
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