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Captured by
Douglas Rollain

Lion Nebula SH2-132 - RC71

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Posts Made By: Jim Thommes

October 21, 2006 05:58 PM Forum: CCD Imaging and Processing/Deep Sky

SH2-54

Posted By Jim Thommes
This object is also in Lynd's Catalog (LBN72). Looks like the cookie monster to me. A full size image and exposure / processing details are at:

http://jthommes.com/Astro/SH2-54.htm

This was an Ha LRGB construction. Data was taken on my Megrez II 80mm APOGrade and Artemis285 Camera.
Ha:L:R:G:B 49:15:12:12:12

October 29, 2006 12:50 AM Forum: CCD Imaging and Processing/Deep Sky

NGC 6820 and NGC 6823

Posted By Jim Thommes
Here is the open cluster NGC 6820 with the surrounding emission nebula NGC 6823.

http://jthommes.com/Astro/NGC6823.htm
(be sure to clik on the image for a full size view)

Scope was my C8 at f/3.3 and Camera was my Artemis285

An earlier version image is here:

http://jthommes.com/MiscAstro/Archives/NGC6823.htm


November 3, 2006 05:28 AM Forum: CCD Imaging and Processing/Deep Sky

SH2-157 - One of those Dim Sharpless

Posted By Jim Thommes
So this image required quite a stretch. Consequently noise and artifacts came out as well.

Anyway I was pleased to get something out of it and thought I would go ahead and post it. Image and exposure / processing details are at:

http://jthommes.com/Astro/SH2-157.htm

This is done on my Megrez II at f/4 and Artemis285 Camera.

November 5, 2006 11:55 PM Forum: CCD Imaging and Processing/Deep Sky

Double Cluster

Posted By Jim Thommes
Here is the Double Cluster in Perseus. Full size image and exposure / processing details are at:

http://jthommes.com/Astro/DoubleCluster.htm
(be sure to click the image for full size)

I have shot this object a couple of times, they can be seen here:

http://jthommes.com/MiscAstro/Archives/DoubleCluster.htm
http://jthommes.com/MiscAstro/Archives/DoubleClusterA.htm

I think the only change over the previous (Feb'05) image is a more accurate color.


November 12, 2006 08:40 PM Forum: CCD Imaging and Processing/Deep Sky

M55

Posted By Jim Thommes
Here is a quick shot of M55.

http://jthommes.com/Astro/M55.htm

I like to visit this loose globular from time to time. Here are some past efforts:

http://jthommes.com/MiscAstro/Archives/M55.htm
http://jthommes.com/MiscAstro/Archives/m55A.htm



November 18, 2006 06:18 PM Forum: CCD Imaging and Processing/Deep Sky

NGC 891

Posted By Jim Thommes
Here is a somewhat wide field image of NGC 891 in Andromeda. Click on the image in the link below for a full res view. Note that north is to the right in the image.

http://jthommes.com/Astro/NGC891.htm

Scope was my C8 at f/6 and the camera was my Art285. I have a previous image from 2 years ago here:

http://jthommes.com/MiscAstro/Archives/NGC891.htm


November 18, 2006 06:21 PM Forum: CCD Imaging and Processing/Deep Sky

NGC 7243 - Open Cluster

Posted By Jim Thommes
Here is a quick image of an open cluster taken from my driveway with some pretty heavy light pollution. (yes, another cluster from me)

It is NGC 7243 which is in a somewhat rich star field in the Milky Way and as such it is hard to distinguish this cluster in monochrome. What is interesting to me is that many of the field stars are red hues (galactic dust?) while the clusters stars are blue - it is easier to see the cluster in the color image.

A full size image can be accessed here:

http://jthommes.com/Astro/NGC7243.htm

November 24, 2006 07:56 PM Forum: CCD Imaging and Processing/Deep Sky

Sharpless 2-170 HaRGB

Posted By Jim Thommes
Here is an image of SH2-170. I found this object to be pretty dim, so I did an HA exposure and then pretty conventional (short) RGBs for starfield color only. I was pretty sure that If I was to try to get nebula color in the RGBs, all my stars would be overexposed to white. I used the "extracted" nebula from the HA to do a false color "lighten" combine to the red channel.

Image and details are here:

http://jthommes.com/Astro/SH2-170.htm
(be sure to click on the image for full size)

November 27, 2006 01:00 AM Forum: CCD Imaging and Processing/Deep Sky

NGC 752 -Open Cluster

Posted By Jim Thommes
In case anyone is interested, I have updated my equipment page (it was *very* out of date). I have listed the filters and focal rducers I use. I also have images of the Artemis and my C8 / Megrez II mounted:

http://jthommes.com/Astro/Equipment.htm

Also, here is an image of the open cluster NGC 752. It was taken from my light polluted driveway, but these open clusters are not too affected by light pollution. Artemis 285 and Megrez II:

http://jthommes.com/Astro/NGC752.htm
(Click on the image for full res.)

Earlier version with a ToUcam SC3 is here:

http://jthommes.com/MiscAstro/Archives/NGC752.htm

December 2, 2006 08:14 PM Forum: CCD Imaging and Processing/Deep Sky

Southern Spiral - NGC 300

Posted By Jim Thommes
Here is an image I thought I would share since I know many of my more Northerly friends cannot get this object. Even at 32 degrees north this barely reaches 19 degrees over my horizon. I took most of the data between 15 and 18 degrees, so it was a bit down in the murk. The color was a bit tricky and the luminance was somewhat noisy. The image can be accessed at:

http://jthommes.com/Astro/NGC300.htm

Perhaps Louie or Greg or some of our other Southern Hemisphere colleagues have done this object? I would be interested to see.

Scope was my C8 at f/5.8, Camera was my Artemis285

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