Iapetus Stereo Imagery |
Iapetus Stereo Imagery |
Jan 24 2006, 11:18 PM
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#1
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Senior Member Group: Members Posts: 1645 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
As mentioned a couple of times in another thread I'm working on composing some stereo images of the "Snowman" craters that appear to reveal topographic details. Here is an initial fairly low resolution attempt so you can see what I'm up to. I've simply been blinking the images to see the stereo effect. Perhaps these images can be cropped and set up in such a way that they can be fused as well. One does have to use caution with interpreting terrain so near the limb of Iapetus. So without further ado, feel free to download the images at this URL:
http://laps.noaa.gov/albers/sos/saturn/iapetus/stereo If this indexed link doesn't work for you please let me know and I can make explicit URLs for each image. Hope you don't have a fear of heights -------------------- Steve [ my home page and planetary maps page ]
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Feb 2 2006, 07:57 PM
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#2
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Senior Member Group: Members Posts: 1645 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
Hi all. I've gone ahead and set up an animated GIF that shows the stereo snowman effect I'm referring to at the URL shown below. This shows up best on the northern (upper) rims of the craters. Farther south, navigation and/or general bumpiness issues near the limb come further into play.
http://laps.noaa.gov/albers/sos/saturn/iap...matesnowman.gif -------------------- Steve [ my home page and planetary maps page ]
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Feb 2 2006, 08:10 PM
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#3
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
QUOTE (scalbers @ Feb 2 2006, 11:57 AM) Hi all. I've gone ahead and set up an animated GIF that shows the stereo snowman effect I'm referring to at the URL shown below. This shows up best on the northern (upper) rims of the craters. Farther south, navigation and/or general bumpiness issues near the limb come further into play. http://laps.noaa.gov/albers/sos/saturn/iap...matesnowman.gif Wow! Great work, which definitively shows that the dark edges of Snowman A and Snowman B are *inside* the craters, and, if deposited ballistically, arrived east to west. This definitively disproves two initially-plausible models: 1) That *all* of the dark stuff was collected from deep space onto Iapetus's leading hemisphere as Iapetus overran it. 2) That all of the dark stuff sprayed out from inside CR towards the edges. A caveat would be that the Snowman craters landed on the boundary of CR and somehow exhumed dark material that ended up on the western sides of those craters. Obviously, that could only happen if the dark stuff was very substantial in depth. Great clues! |
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