Image of the day

Captured by
Douglas Rollain

Lion Nebula SH2-132 - RC71

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Posts Made By: Jim Thommes

December 4, 2006 12:39 AM Forum: CCD Imaging and Processing/Deep Sky

NGC 2024 Flame Nebula in Orion

Posted By Jim Thommes
Rob,
Cool image and good detail for poor seeing. Some softness caused by the seeing seems to come through a little - but if you hadn't mentioned, I may not have even notice.

December 4, 2006 12:52 AM Forum: CCD Imaging and Processing/Deep Sky

Southern Spiral - NGC 300

Posted By Jim Thommes
Thanks guys for the comments. It is somewhat bold to attempt an object like this so close to the horizon, but the sky stability is usually pretty good due the the Pacific Ocean influence - even 50 miles inland where I was.

Greg - Thanks for the great link on this object - I should have known to check Daniel's site.

December 10, 2006 10:06 PM Forum: CCD Imaging and Processing/Deep Sky

Sculptor Galaxy

Posted By Jim Thommes
Thanks all for the comments - much appreciated.

Dietmar,
I got this image at an average of 26 degrees over the horizon. It tops out at just under 32 degrees over the horizon where I was imaging.

December 13, 2006 04:30 AM Forum: CCD Imaging and Processing/Deep Sky

What's going on here

Posted By Jim Thommes
I have seen similar artifacts on some of my images. Turned out it was a lint string on the CCD window.

To see an artifact like this with your 80ED of about f/7, it needs to be relatively close to the focal plane - that's why I think it is on the CCD.

This kind of string lint usually comes from a Q-tip used to clean the CCD window. It's not so bad with the DSI since I don't think there is a cold chamber you have to disassemble to remove it. Take a close look with a magnifying glass.

December 19, 2006 05:35 AM Forum: CCD Imaging and Processing/Deep Sky

M39

Posted By Jim Thommes
Thanks for the comments guys.

December 20, 2006 06:04 AM Forum: CCD Imaging and Processing/Deep Sky

My first color image, NGC2304

Posted By Jim Thommes
Chris,
Nice Image.

Wow, What an ambitious effort for your first color image. So you got HA enhancement, took G2V data for color calibration, and deep exposures to boot.

January 3, 2007 05:17 AM Forum: CCD Imaging and Processing/Deep Sky

Sharpless 254 through 258

Posted By Jim Thommes
Thanks for the comments guys.

January 5, 2007 04:06 AM Forum: CCD Imaging and Processing/Deep Sky

Sharpless 254 through 258

Posted By Jim Thommes
Thanks for the comments (and season wishes from Ivan and Eric).

Dan, Yes, I think if I was selecting targets out of IC I may have just gone for IC2162. But I was selecting out of Sharpless and I was intrigued by these five sharpless objects so close together. When I was surveying the internet for SH2-25x, these always seemed to be framed together.


January 8, 2007 04:20 AM Forum: CCD Imaging and Processing/Deep Sky

Last night...

Posted By Jim Thommes
Ivan,
Looks like you had way too much fun - Aligators and all!!!

Nice Pics, what a busy night.

January 8, 2007 04:23 AM Forum: CCD Imaging and Processing/Deep Sky

Eta Carina Ha widefield

Posted By Jim Thommes
Greg,
Nic Pic!. Looks like the HA can even filter out clouds (heh, heh,).

Looking forward to color....

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