Uranus System Imaging |
Uranus System Imaging |
Dec 14 2009, 10:18 AM
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#1
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
I finished my first good image of Uranus.
Planet is colorized from three filtered images (orange, green, blue). Slightly brownish color of rings is entirely artificial. -------------------- |
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Nov 30 2017, 03:27 PM
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#2
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Solar System Cartographer Group: Members Posts: 10185 Joined: 5-April 05 From: Canada Member No.: 227 |
If what you are asking for was easy it would have been done long ago. Because of time constraints, all the high resolution images were B/W. The color images were taken earlier, not just at lower resolution but also from a different direction. Overlaying the best color on the best B/W would need reprojection and would usually have an area which is not covered by color. Oberon might be the easiest one to do successfully. Artificial colorizing might give good results in the hands of a real artist like Damia Bouic.
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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Guest_MichaelPoole_* |
Nov 30 2017, 03:39 PM
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#3
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Guests |
If what you are asking for was easy it would have been done long ago. Because of time constraints, all the high resolution images were B/W. The color images were taken earlier, not just at lower resolution but also from a different direction. Overlaying the best color on the best B/W would need reprojection and would usually have an area which is not covered by color. Oberon might be the easiest one to do successfully. Artificial colorizing might give good results in the hands of a real artist like Damia Bouic. Phil I realize it is hard and thank you for explaining why. May I ask what process was probably used here http://wanderingspace.net/wp-content/uploa.../11/miranda.jpg ? The Miranda color data seems uniform enough to just project on the hi res image in my opinion https://www.jpl.nasa.gov/spaceimages/details.php?id=PIA00042 . It seems to me Miranda would be easiest, not Oberon. What about combining those 2 techniques, combining best color with best BW and colorizing the areas not covered by color to look like the areas with it? Don't take me wrong, I don't want people to work their ass off for free just because I want a pretty wallpaper picture. But it's not about that, good full color pictures of the Uranian moons would be a blessing, and we will not get any more pictures until the 2030s at the very least, so processing old pictures is all we have. Besides, the moons of Uranus are neglected in the imagination of the public, with many people thinking that they're "boring" even if they have a crazy geology and possible ammonia water oceans underground simply because the pictures are not great and photogenic like those of Jovian moons or the moons of Saturn. |
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Nov 30 2017, 04:28 PM
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#4
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
I don't know on what schedule this might take place, but the new generation of larger ground based telescopes ought to be able to produce some impressive global maps of the uranian satellites at a resolution that will, to be sure, not match Voyager 2, but may be comprehensive and cover the entire surfaces with arbitrary spectral coverage.
It is particularly helpful that the four or five larger satellites are all co-located, so the same set of observations with no/little repointing can cover them all. To speak to the capabilities, compare this image of Ganymede: http://www.unmannedspaceflight.com/index.php?showtopic=8253 Uranus is about 4.3 times farther than Jupiter, but the ELT will have 7.9 times the aperture of the Hale Telescope that took that pictures, so the resolution per km will roughly double. Titania is about 1/3 the diameter of Ganymede, so the pictures of Titania, enlarged to the side of that Ganymede photo, will end up having about 1.5x worse resolution, which is still damned good. In fact, that will exceed the Voyager 2 resolution in many cases. And the ground-based telescopes can sit and wait for the uranian seasons to change. There are three telescopes in development that will radically (more than 2x) improve upon the largest existing telescopes. Now, I'm sure these worlds aren't in anybody's top ten list of priorities, and I have no certain insights as to when they'll score some observation time, but it seems inevitable that such observations will eventually occur, and precede the next mission to arrive on the scene. The uranian satellites may even be among the higher priorities in the solar system, because telescopic mapping will not improve on Galileo/Europa Clipper/Cassini mapping of the major satellites of Jupiter and Saturn. Other worlds that could benefit from these capabilities will include Pallas, Juno, and Triton. So lament not – the day of revelation (of the outer and smaller worlds) is coming. |
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