Processed Cassini Jupiter Images, Fun with the PDS files |
Processed Cassini Jupiter Images, Fun with the PDS files |
Aug 3 2005, 10:26 PM
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#1
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IMG to PNG GOD Group: Moderator Posts: 2254 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
Now that I have downloaded all of the PDS formatted Cassini Jupiter images (and actually all of the Saturn images too) I have been experimenting with processing calibrated versions of them:
http://www.mmedia.is/bjj/misc/css_stuff/im...grnbl1_proc.jpg http://www.mmedia.is/bjj/misc/css_stuff/im...olor_mosaic.jpg The first one is simply a global view composed from CB1 (red), GRN and BL1 filtered images with the color balance adjusted to make it more realistic and with some sharpening applied to the image. This is a preliminary version, it looks very bluish at the limb due to Jupiter's rotation (I preferred this to color fringing at the center of Jupiter's disk). Later I plan to fix this by rotating the images in 3D space. The second one is a reprocessed version of the well known Io transit image but with the addition of the north polar region - since this is a preliminary version some seams may be visible. Later this may turn into a global mosaic. The color balance is also improved. The 'official' image seems to have been composed from CB2, (CB2+BL1)/2 and BL1 filtered images (only CB2 and BL1 images are available). Using CB2 as red makes the belts too reddish if you want whitish zones. To fix this I used a synthetic CB1 image created from a linear combination of the CB2 and BL1 images. Needless to say I also used a synthetic green image. Now the plan is to do a big cylindrical map of Jupiter followed by an even bigger one of Saturn. |
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Dec 18 2009, 04:02 PM
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Very nice images!
Jupiter is one of the most photogenic objects in solar system. Image with Io is magnified or is it mosaic (is bigger than Cassini CCD)? -------------------- |
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Dec 18 2009, 06:04 PM
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Jupiter is one of the most photogenic objects in solar system. It sure is! It's also tough to work with unless you have a rapid-fire camera, and Cassini's sure don't fit that bill. Great work on the images, Ian, they look very close in color to official images. Here are a couple of my recent processings: And an animated gif: -------------------- |
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