Rev 123 - Dec 18, 2009-Jan 3, 2010 - Prometheus |
Rev 123 - Dec 18, 2009-Jan 3, 2010 - Prometheus |
Dec 21 2009, 05:20 PM
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
I was struck by how much images like this...
http://saturn.jpl.nasa.gov/multimedia/imag...5/N00148493.jpg ... remind me of the view through my 4.5" scope when I peer into it without the eyepiece. LOts of fascinating internal light reflections there... -------------------- |
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Dec 27 2009, 04:12 PM
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Senior Member Group: Moderator Posts: 3241 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
ROFLMAO, thank you for also posting the WAC view. I just about had a heart attack when I saw the NAC image.
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Dec 27 2009, 06:08 PM
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Awesome Prometheus images, a quick RGB composite from the first set:
EDIT: Added 2nd, lower phase set as well. -------------------- |
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Dec 28 2009, 03:10 PM
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Junior Member Group: Members Posts: 94 Joined: 15-October 09 Member No.: 4979 |
[quote name='ugordan' date='Dec 27 2009, 01:08 PM' post='152478']
Awesome Prometheus images, a quick RGB composite from the first set: Very nice. I was wondering what you're basing your color balance on. I did an RGB combine after cleanup and alignment in MaxIm DL5, and I end up with slightly more color variance across the little icy rock. My version also uses a touch of non-linear stretching so that the bright regions are easier to see. Upsampled and slightly deconvolved (0.5 PSF, 4 iterations). Sean W. |
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Dec 28 2009, 03:25 PM
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#5
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
I was wondering what you're basing your color balance on. I based it on the F ring white point which in principle should have also resulted in Prometheus' color being close to some calibrated shots I have (this one and this one) - a slight brown-reddish color. Mind you, I did this on a laptop screen and I have no idea if it turned out remotely close to what I wanted it to. There definitely is some slight color variation, but just like in Hyperion's case, if you don't "kill" the overall hue, it's not noticeable. Otherwise you just have red and slightly-less-red regions. Upsampled and slightly deconvolved (0.5 PSF, 4 iterations). Do you use any special tool for that? I'm asking because I'm looking for a more specialized deconvolution tool than the "smart sharpen" filter in Photoshop for Deep Impact imagery. -------------------- |
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