Cloud hunting between flybys, more distant views |
Cloud hunting between flybys, more distant views |
Feb 19 2009, 01:59 PM
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
The latest shots of Mezzoramia and environs are nice:
http://saturn.jpl.nasa.gov/multimedia/imag...7/N00131391.jpg I'm not sure if that's a cloud streak on the left. |
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May 5 2009, 01:17 AM
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
Here is a study of different gradient construction techiniques to try to remove the "background" contrast of Titan's atmosphere and other stuff.
The idea is that "cloud features" = contrast stretch (ISS combo image - suitable gradient) Subtracting the corresponding MT1 image (N0013577.jpg) gives a cloud+haze type image. There seems to be "real" structure in the polar haze as seen at the lower latitudes boundary of the haze. Subtracting an artificial self-gradient made by taking the original image, then Gaussian blurring and Minimum blurring it into smoothness, allows the broad haze to cancel out, revealing the more defined clouds. Using an inverted hi-pass filter gave OK results, but only in a narrow brightness range. It was also blurrier compared to the artificial self-gradient. (Swell....She of the Infinite Sarcasm just drifted past and commented "Are you still staring at those mammograms?") -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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