Uranus System Imaging |
Uranus System Imaging |
Aug 19 2010, 01:07 AM
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#31
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
Very nice work.
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Aug 19 2010, 02:58 AM
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#32
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Member Group: Members Posts: 316 Joined: 1-October 06 Member No.: 1206 |
Ditto.
Im enjoying this thread, and enjoying the better press Uranus is finally getting lately (jokes aside, I think the active equinox atmosphere has helped silence the 'totally bland' press the planet has had since 1986). Back to the moons. I wonder (Wunda? ) how many decades it will be before we get a better peek at Umbriel's strange Wunda? Looks very Iapetaen. P |
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Aug 19 2010, 07:32 AM
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#33
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Three images of Titania. Is the color shift to red/pink near the terminator real or an artifact? -------------------- |
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Aug 19 2010, 10:34 AM
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#34
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Ted: Thanks!
Antipode: I'm always enjoying work with Uranus moons, I hope this is another small piece of work which leads to support new mission to these strange lands. "Wunda? Looks very Iapetaen" I think so too . Ugordan: All three images shares same color data from medium resolution image. I used different processing technique to highest resolution image which leads to slightly bigger color differences. So I think color shift is real, but slightly more enhanced than on another two images (and terminator regio isn't so good visible on these two images). -------------------- |
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Aug 19 2010, 05:26 PM
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#35
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
I have also noticed the color shift.
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Aug 19 2010, 05:49 PM
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#36
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
It looks like a calibration artifact at first, but then if you look closer it looks like an albedo feature as it extends clockwise all the way to the sunlit limb at 5 o'clock. I think that's the most color variation I've seen on Uranus' moons.
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Aug 19 2010, 05:58 PM
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#37
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
You see? THIS is why I love UMSF so much... You Image Mages delve into the misty archives, drop the old, forgotten images dumped there into your cauldrons, give a good stir and whumpf! out come amazing new views of these distant worlds...
Many thanks for sharing these beautiful pics, guys. -------------------- |
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Aug 19 2010, 07:32 PM
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#38
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Ugordan, Tedstryk:
In case of color shift near the terminator, I think that's combination of imperfections of calibration (which are more evident at low brightness level) and real surface color. I looked at maps and redder hemisphere is around 90° longitude. I think it's the leading hemisphere. Stu: Image Mage, nice phrase "forgotten images dumped there into your cauldrons" My secret ingredient is bat's ear but keep it under your hat Last in set - Oberon. Resampled at 3 km/pix. Real resolution 7 km/pix. -------------------- |
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Aug 22 2010, 04:44 PM
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#39
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Here's a color version of Titania using calibrated data from the PDS rings node:
Left is gamma-correct, right is contrast enhanced. While that calibrated data set is known to have calibration issues and is not the greatest quality Voyager ISS data set in the world, it appears to be missing the color shift around the terminator. Taking a quick look in green+violet (as well as using clear as an effectively 460 nm filter) color of all the moons, Miranda, Ariel and Umbriel appear to be effectively grey (Umbriel the most), while Oberon and Titania have that slight brownish tint to them. -------------------- |
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Nov 10 2010, 02:39 PM
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#40
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Newbie Group: Members Posts: 15 Joined: 28-November 08 From: Germany Member No.: 4498 |
Machi´s version of the Oberon data set can be used to add a tiny bit of coverage along the terminator of Steve Albers´ map. I assume the color processing is different and just roughly adjusted the brightness.
While I´m at it, here´s a quick reprojection of the Titania nightside coverage dicovered by Ted Stryk onto Steve´s map (looks slightly mismatched, but dayside features line up in this position). |
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Apr 13 2011, 04:01 PM
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#41
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Anaglyph of Titania. It's based on synthetic frame between last two high resolution Voyager images of Titania.
Edges were removed. -------------------- |
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Apr 13 2011, 04:27 PM
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#42
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Member Group: Members Posts: 656 Joined: 20-April 05 From: League City, Texas Member No.: 285 |
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Apr 14 2011, 08:56 PM
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#43
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Cross-eye stereo image of Titania. Synthetic image is more precise than that one in previous anaglyph.
Resampled to ~2 km/pix. Edges were cropped from synthetic image. -------------------- |
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Apr 15 2011, 01:01 AM
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#44
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Daniel, you're a wizard. These are AMAZING.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Apr 16 2011, 02:24 AM
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#45
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IMG to PNG GOD Group: Moderator Posts: 2254 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
Agreed, this is amazing. Interestingly the anaglyph reveals that the surface is a bit depressed farther away from the big fracture than can be easily seen in the original imagery.
I want a Uranus orbiter! ;-) |
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