Uranian Satellite Image Processing |
Uranian Satellite Image Processing |
Jan 6 2006, 05:55 PM
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#1
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Senior Member Group: Moderator Posts: 3233 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Before the T9 data came down, I got a little bored, and played around with some Voyager data of Ariel. The mosaic (oft produced) I generated is below. Again, this mosaic has been produced by a number of folks on the net, so this isn't really new, but I thought I would get this product out there anyway. I stretched the image such that only a few crater rims would have a DN=255 (other mosaics boost the contrast a bit too much, overexposing the ejecta around Melusine, for example. I also ran this image through a high pass filter, sharpening the image.
Enjoy! -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Jan 6 2006, 06:23 PM
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#2
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Very nice, Jason! I like the extra detail that you get by high pass filtering and not over-stretching it.
A general comment/question about the Uranian satellite images...because of the season, all of the illuminated parts of all of the satellites in all of the images were pretty much in the southern hemisphere, right? Yet it's really rare to see the Uranian satellite images oriented so that the south pole is at the bottom of the images. I usually rotate any such views before I post them to make them hemispheres illuminated from the bottom, assuming that that puts north at the top. Is that right? --Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Jan 6 2006, 06:57 PM
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#3
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Senior Member Group: Moderator Posts: 3233 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
You're right, South is approximately to the left.
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Jan 6 2006, 07:00 PM
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#4
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Solar System Cartographer Group: Members Posts: 10191 Joined: 5-April 05 From: Canada Member No.: 227 |
Here's another one from shortly before Jason's. This is a composite of all the frames from the sequence, chosen to give the maximum surface coverage (hence a small extension at the top from a lower quality frame, not usually included in previous versions of this mosaic).
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Jan 6 2006, 07:03 PM
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#5
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Solar System Cartographer Group: Members Posts: 10191 Joined: 5-April 05 From: Canada Member No.: 227 |
... and the one before that. This is a 'super-resolution' composite of several frames from a color sequence.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Jan 7 2006, 12:27 PM
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#6
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Member Group: Members Posts: 509 Joined: 2-July 05 From: Calgary, Alberta Member No.: 426 |
Why don't you re-post some of your Umbriel shots here, Phil? This would be a good place to put them.
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Jan 7 2006, 06:02 PM
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#7
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
Great mosaic work!
I did some work with Ariel images a while back, including this approach sequence, using super-resolution where appropriate data was available. Here are two of the images in color: Here is the night side from the same images as Jason's mosaic. Here is my best effort with Umbriel. http://pages.preferred.com/%7Etedstryk/umbriel.html Also, here are similarly processed images of Oberon. -------------------- |
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Jan 11 2006, 07:46 PM
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#8
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
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Jan 11 2006, 08:02 PM
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#9
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Senior Member Group: Moderator Posts: 3233 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Very nice ted. I like the approach sequence, as it clearly shows the rotation of Ariel.
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Jan 16 2006, 03:18 PM
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#10
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
That is neat to see. I really like my last on though, because it shows the night side more clearly. Here is a slightly improved version (I reduced a frame border line).
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Jan 18 2006, 03:34 AM
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#11
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
Here is a color view of the night side. Of course, the night side is colorized, since there is no color data available, as are some areas near the terminator.
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Jan 18 2006, 07:16 AM
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#12
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Very, very nice, Ted!
The stuff you manage to pull out of the old Voyager imagery more resembles Cassini-quality pics than poor-old-vidicon-tube Voyagers! -------------------- |
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Jan 19 2006, 05:27 PM
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#13
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Solar System Cartographer Group: Members Posts: 10191 Joined: 5-April 05 From: Canada Member No.: 227 |
Ted's stuff is great - keep it up! I hope you recover from your recent crash OK.
Not to ignore Rob Pinnegar's request - Hi Rob! - but I've been too busy to deal with it. Teaching again this term. If somebody wants to find those posts and link back to them that would be fine. I'd rather not post a second time. But too busy to search for the old post. Oops - gotta go! Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Jan 24 2006, 02:16 PM
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#14
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Senior Member Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 |
Today, January 24, is the twentieth anniversary of Voyager 2's flyby of the planet Uranus, the first probe to that world.
http://voyager.jpl.nasa.gov/science/uranus.html http://en.wikipedia.org/wiki/Voyager_2 Four days later, nearly everyone forgot about this mission and its images of a bland blue ball. http://www.fas.org/spp/51L.html -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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Jan 24 2006, 05:39 PM
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#15
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
QUOTE (ljk4-1 @ Jan 24 2006, 02:16 PM) Today, January 24, is the twentieth anniversary of Voyager 2's flyby of the planet Uranus, the first probe to that world. http://voyager.jpl.nasa.gov/science/uranus.html http://en.wikipedia.org/wiki/Voyager_2 Four days later, nearly everyone forgot about this mission and its images of a bland blue ball. http://www.fas.org/spp/51L.html Funny to think of...That was my 7th birthday. Of course, in those days, I don't think I had even heard of Voyager 2. -------------------- |
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