Reprocessing Historical Images, Looking for REALLY big challenges? |
Reprocessing Historical Images, Looking for REALLY big challenges? |
Apr 21 2005, 11:26 PM
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Member Group: Members Posts: 123 Joined: 21-February 05 Member No.: 175 |
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Jul 21 2005, 08:24 PM
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Solar System Cartographer Group: Members Posts: 10186 Joined: 5-April 05 From: Canada Member No.: 227 |
Ted, regarding your very nice Miranda image... I hate to say this, I really do, but there's a problem. The planet is off the image to the top, over zero longitude. So planetshine can't possibly reach the area at the bottom where you show it most clearly. That must be some kind of artifact. Sorry about that.
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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Jul 21 2005, 10:12 PM
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
Actually, it turns out to be neither planetshine nor an artifact. Turns out there was a layer out of alignment in the original stack! It was used at such a low percentage and I skipped my usual step of converting to 16 bits for processing, and so it barely showed through - back to the drawing board!
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Jul 28 2005, 12:51 AM
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
I have been playing with Voyager's Enceladus images, since they are the only ones that show the north pole. This is a work in progress. Color is only done for the Voyager 1 image and the closest Voyager 2 image. The first image is from Voyager 1, the rest are from Voyager 2.
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Jul 28 2005, 07:37 PM
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
I have made a color version of the second closest image, and placed it on the left here, with the closest image on the right. Although the resolution isn't quite as good, I think it shows a much prettier view of Enceladus, as well as a good view of North Polar terrain. You may notice that it looks smoother, due to the fact that these images actually fit together well, allowing a pretty good super-resolution effect - in fact, despite being much more distant, there aren't many features I can't see in this mosaic that are resolved in the closer one). Also, except for one clear image, no image in the highest resolution mosaic covered the whole disk....thus the color was done with a mixmatch of filters. The second closest image is a nice, OGV color image (one of my little projects with Voyager is to produce, when possible, OGV, OGB, or OGUV color (in order of preference, but I have to take what is available). The images match Cassini images much better when orange is used instead of green for the red channel.
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