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Captured by
Douglas Rollain

Lion Nebula SH2-132 - RC71

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Posts Made By: Alan Friedman

November 21, 2006 02:35 PM Forum: CCD Imaging and Processing/Solar System

Saturn 9/20 A New Band?

Posted By Alan Friedman
Hi Chris -

That is an excellent image of saturn! This apparition should allow good views of bands in the northern latitidues.

best -
Alan

November 26, 2006 10:53 PM Forum: CCD Imaging and Processing/Solar System

Cassini

Posted By Alan Friedman
Hi Ed -

A very detailed image, though I'm not sure the resize is necessary. Looking forward to seeing the other images you captured that night.

best -
Alan

November 26, 2006 10:57 PM Forum: CCD Imaging and Processing/Solar System

Saturn this morning 11-24-06

Posted By Alan Friedman
Hi Steve -

A very nice sharp saturn.

Saturn does not offer a lot of light and it is very demanding of the seeing conditions too. It can help to use a B&W camera for luminance.

Thanks for posting -
Alan

November 29, 2006 09:58 PM Forum: CCD Imaging and Processing/Solar System

Herschel to Azachel

Posted By Alan Friedman
Hi Chase -

That's a nice widefield view that shows very well some of the long straight and roughly parallel depressions that score this region.

Alan


November 29, 2006 10:00 PM Forum: CCD Imaging and Processing/Solar System

Saturn November 26, 2006

Posted By Alan Friedman
Hi Ed -

Another very good saturn - nice work!

cheers-
Alan


December 1, 2006 02:50 PM Forum: CCD Imaging and Processing/Solar System

Neptune and Triton

Posted By Alan Friedman
Hi Ed -

That's a great recording!

best -
Alan

December 1, 2006 02:53 PM Forum: CCD Imaging and Processing/Solar System

Color moon mosaic Nov 29

Posted By Alan Friedman
Wow, Dodi, that is a breathtaking picture. It strikes a really nice balance of scale and resolution - great fun to wander around.

Thanks for sharing it here,
Alan

December 1, 2006 02:55 PM Forum: CCD Imaging and Processing/Solar System

the BIG picture

Posted By Alan Friedman
Thanks very much for the comments.

(Ed - you must be reading my mind!)

cheers-
Alan

December 2, 2006 04:49 PM Forum: CCD Imaging and Processing/Solar System

Rima Ariadaeus

Posted By Alan Friedman
Hi Ed -

You've captured and processed excellent detail in this image!

As with many pictures taken at a low sun angle, it carries the processing challenge brought about by high contrast between shadows and sunlight. Some regions (ie: the major craters in dark shadow) pick up processing artifacts quickly while the areas in the mid tonal range can handle much more. Kind of like cooking a turkey - it is very difficult to roast a whole bird and come up with both white meat and dark meat perfectly done.

Photoshop selection tools can help by allowing you to process different areas of the image selectively. I've never processed an image in Registax - would be interesting to hear how others handle this challenge in their workflow.

best wishes-
Alan


December 2, 2006 06:06 PM Forum: CCD Imaging and Processing/Solar System

CLAV

Posted By Alan Friedman
Hi Tyler -

I think you should come over from the dark side more often. 8)

Great shot!

Alan

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