[X] My Assistant

[ugordan]

Here's a very short, grayscale Rhea flyby movie made up from 10 Cassini clear frames. The frames were reduced to 3/4 original size to keep the thing reasonable. One could arguably make a 3d anaglyph because the vantage point changes quite a bit. Note that the sequence is clipped a bit because Rhea was filling the entire field of view. There's a noticeable dimming of surface features as the phase angle increases.

 RHEA.mov ( 972.05K ) Number of downloads: 716

WARNING: Quicktime 7 and H.264 codec required!

[ugordan]

Also, here are a couple of color composites I don't recall were previously released by CICLOPS team:

Prometheus in true color within the rings on the left, Dione RGB composite on the right. Dione's saturation was enhanced, but the thing is still very gray:


An R+B shot of Saturn with the unilluminated side of the rings present:


Another shot of Saturn's cloudtops, R+B, synthetic green. The image on the right was greatly enhanced to bring out the cloud features:

[Bjorn Jonsson]

Great images although I'm not sure the color balance in the Saturn images is correct (however, that's something that can also be said of my own images ). I'm surprised more images processed from the Cassini PDS releases haven't appeared here, they are an absolute goldmine.

As a matter of curiosity, how did you make the synthetic green images ?

[ugordan]

As a matter of curiosity, how did you make the synthetic green images ?

I simply used Photoshop's channel mixer. I used a balance of red and blue that produces this general color. I can't remember OTOH the exact mixes, but I do remember that red + blue add up to over 100% for the green. Generally, it's a pretty even mix with only a couple of percents more red than blue. I was aiming towards something looking like this and to some extent this ground-based image (courtesy of Anne Verbiscer).

You're right, there's a real goldmine in the PDS images, in fact I think the next batch of data should be released very soon, if not already.

BTW, since you're 'here', can you tell me if you're having any problems with flatfielding the WAC images? My code seems to work perfectly on NAC frames, but the WAC frames still end up with excessive static noise. I don't know if my code is faulty (which would be strange because it handles both NAC and WAC images the same way) or the provided wide angle flatfields aren't that good.
That sharpened cloud image above is distinctly noisy as can be seen.

[ugordan]

Several Enceladus shots in stretched color:


Taken on 15 January 2005. Shows dimming with increasing phase angle.



These were taken on 16 February 2005. The brown darkground in the first image is Saturn's disk.
The right image one is a stereo pair intended to be viewed crossed eyes. The gamma of the image was lowered to bring out a little more details on the disc.


These three were taken March 9 2005.

EDIT: I removed two separate images from Feb 16 and replaced them with a stereo pair instead.