Image of the day

Captured by
Douglas Rollain

Lion Nebula SH2-132 - RC71

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Posts Made By: Jim Thommes

June 22, 2005 03:56 AM Forum: CCD Imaging and Processing/Deep Sky

Re-processed Messier 8 - Epsilon 160 and ST-2000XM

Posted By Jim Thommes
Dean,
Cool image - I like it a lot.

In looking at your image caption, seems like this is a straight RGB. So you took no luminance or H-Alpha exposures? If so, even more impressive.

Does your processing include any background smoothing? It looks really smooth at the low intensity levels and I was wondering if it is coming out of the stack (assuming you did subs) that smooth?

June 28, 2005 02:18 AM Forum: CCD Imaging and Processing/Deep Sky

Helix LLRGB

Posted By Jim Thommes
Tom,
Lovely image, very nicely done. I think I want to do this one later this year - your image inspires me (and gives me something to shoot for).

So by your description it sounds like your luminance channel consisted only of the HA exposure? - Interesting.

June 28, 2005 02:23 AM Forum: CCD Imaging and Processing/Deep Sky

M5 Globular Cluster

Posted By Jim Thommes
Thanks guys for all the nice comments.

The processing on this image involved some masking of the core and selective processing to maximize detail from core to edge. So it is completely blown out for any type of photometric comparison. But I had fun with it.

July 10, 2005 12:31 AM Forum: CCD Imaging and Processing/Deep Sky

My M27

Posted By Jim Thommes
Brian,
Looking really good! Congrats!

July 10, 2005 11:07 PM Forum: CCD Imaging and Processing/Deep Sky

Galaxy NGC 2403

Posted By Jim Thommes
Thanks everyone for your comments - I appreciate them. Hopefully, if I get on it, I have a backlog of exposure data to process so I can post a few more images.

July 12, 2005 03:14 AM Forum: CCD Imaging and Processing/Deep Sky

M101 from Dogtown Ranch, CA

Posted By Jim Thommes
Vincent,
That's a really nice Luminance. Great Job.

Looks like your "learning" is on a crash course based on this result. I look forward to when you will be adding color to your images

July 13, 2005 05:25 AM Forum: CCD Imaging and Processing/Deep Sky

Sh2-142/NGC7380 in Ha

Posted By Jim Thommes
Vince,
Another fine image! How much more practice do you need on the Luminance. You have my mouth watering for your color versions...

July 14, 2005 03:10 AM Forum: CCD Imaging and Processing/Deep Sky

Emission Nebula LBN 168

Posted By Jim Thommes
Jose, Greg,
Thanks for the comments. I have appreciated using the Artemis camera. And Jose, thanks for the comments on the processing. As I indicated in my caption on my website, I did have to repair some star shapes due to errors in the exposures. But the nebula and colors came out pleasing and I wanted to make the best I could of the exposures in the processing.

July 16, 2005 02:53 AM Forum: CCD Imaging and Processing/Deep Sky

M27 at higher magnification

Posted By Jim Thommes
Tyler,
Well done! I love the colors - I think you have done a fine job with the subtle distinctions on green and blue.

July 17, 2005 05:15 AM Forum: CCD Imaging and Processing/Deep Sky

M27 H-Alpha Enhanced

Posted By Jim Thommes
Thanks to all for your comments.

Tom, Ii feel like I did get some good detail and range. I think the lack of Teal is attributable to my RGB filters. My green exposure shows very low intensity in the nebula. I am using home mage Edmund Optics dichroic RGB filters and I think my green doesn't have the proper OIII overlap. Maybe a good RGB set should be my next purchase?

Stuart, you got some good green in your RGB plus a range of color with your other mixes. What makes of filters are you using?

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