Reprocessing Historical Images, Looking for REALLY big challenges? |
Reprocessing Historical Images, Looking for REALLY big challenges? |
Oct 4 2005, 01:27 AM
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#241
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
The latest Cassini images of Dione over Saturn remind me of an old Voyager view I am still tinkering with. Here is the best I can do so far. The problem is that available color is O B V UV. I have used OV with a synthetic green from O and V blended with 25% from the B image. Otherwise Saturn looks red due to color shifting. It is also enlarged via super-resolution processing using all four images (which are, unfortunately, underexposed)
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Oct 4 2005, 12:29 PM
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#242
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Member Group: Members Posts: 378 Joined: 21-April 05 From: Portugal Member No.: 347 |
Very good!
The data looks new ;-) -------------------- _______________________
www.astrosurf.com/nunes |
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Oct 6 2005, 04:36 PM
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#243
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
QUOTE (4th rock from the sun @ Oct 4 2005, 12:29 PM) Thanks. I do plan to tweak the color a bit...there are a few saturation issues. But my working with Voyager at Saturn images is winding down now with the Cassini release. Here is a view of crescent Mimas with the night side in Saturnshine. -------------------- |
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Oct 20 2005, 03:21 AM
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#244
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
This took a lot of work for small returns, but I was curious what could be pulled from this data. These are images of the Uranian moons from the receding Voyager 2. The Miranda image is made from a single, nearly-blank frame, and the rest are from color filtered data (as close to OGV as possible given the horrible quality of the orange data). At any rate, these are the only views of these worlds from this perspective. They are in this order:
Miranda, Ariel, Umbriel, Titania, and Oberion. There are some strange paterns on Titania's limb - particularly the big flat area. It was apparent in all the decent frames used to compose the image. -------------------- |
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Oct 24 2005, 02:46 AM
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#245
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Solar System Cartographer Group: Members Posts: 10150 Joined: 5-April 05 From: Canada Member No.: 227 |
Back to Apollo... here's a polar projection of one of the Apollo 17 panoramas at Shorty crater, site of the unexpected discovery of orange solil. The pan itself was assembled first, then its ends matched, which was complicated because the astronaut moved a few steps as it was taken, so the foregrounds did not match very well. There is some serious distortion in that overlap area, but it's reduced in severity in the polar view because the foreground is so compressed.
My Apollo pans are for mapping purposes, so I edit areas of moving astronauts, shadows etc. to maximize surface visibility. This leaves oddly truncated people, equipment and shadows. But it helps my mapping work! Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke 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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Oct 24 2005, 02:00 PM
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#246
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Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
Phil:
Interesting perspective - any thoughts on the fuzziness as you leave the central area of the image? Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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Oct 24 2005, 02:02 PM
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#247
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
Great work. I am currently experiencing what are speaking of with pans with moving centers. I have, for the past few months, been trying to assemble a pan (much longer than the one usually released) from Sojourner images. It has proved tricky.
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Oct 24 2005, 04:22 PM
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#248
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Solar System Cartographer Group: Members Posts: 10150 Joined: 5-April 05 From: Canada Member No.: 227 |
Bob - the fuzziness is caused by me using a reduced size pan to make the polar projection. I had to make it on a different computer than I usually use and its RAM was too limited to work at high res. Then the geometry of reprojection stretches it out around the centre and makes it fuzzy, while compressing the centre and leaving it sharp.
Or you could get your eyes checked! Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke 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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Oct 25 2005, 03:10 AM
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#249
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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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Oct 25 2005, 10:53 PM
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#250
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
Here are two more Sojourner pans. Here is one among the rocks soon after Yogi.
And here is one of the Rock Garden itself. -------------------- |
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Oct 27 2005, 02:57 AM
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#251
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
Here is my preliminary version of a color Beyond the Rock Garden pan, using Sojourner color and gapfill based on Sojourner color.
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Oct 27 2005, 03:04 AM
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#252
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Solar System Cartographer Group: Members Posts: 10150 Joined: 5-April 05 From: Canada Member No.: 227 |
Very nice, Ted. It's good to see new landscapes in old data like this.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke 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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Oct 27 2005, 07:34 AM
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#253
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Member Group: Members Posts: 562 Joined: 29-March 05 Member No.: 221 |
i love the shadow of sojourner in the bottom right corner
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Oct 27 2005, 01:18 PM
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#254
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
QUOTE (paxdan @ Oct 27 2005, 07:34 AM) Thanks...here is a somewhat improved image. I am really strugglign with the left end of the pan. Here is the raw, left-most segment (well, almost raw - I did put the strips together vertically). As you can see, thanks to glare, the data is just godawful. -------------------- |
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Oct 27 2005, 03:07 PM
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#255
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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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