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Posts Made By: Jim Thommes

October 3, 2007 04:29 AM Forum: CCD Imaging and Processing/Deep Sky

Part of the Heart

Posted By Jim Thommes
At the bottom of the Heart Nebula (IC 1805) is a bright emission complex - IC 1795. I have taken a narrow view image of this area. Full size image and exposure / processing details are at:

http://jthommes.com/Astro/IC1795.htm
(be sure to click on the image for full size)

C8 @ f/3.6
Artemis285
G11/Gemini
Guided with WO Megrez 80 mm, DSI Pro, K3CCDTools

A point of confusion for me is the catalog item NGC 896. It seems I have seen inconsistent identifications of IC 1795 and NGC 896 in planetarium programs, other images and even Astronomy Magazine (October 2007). If anyone can clarify, I would appreciate it.

An earlier version of this area from 2004 is here:

http://jthommes.com/MiscAstro/Archives/NGC896.htm


October 13, 2007 03:42 AM Forum: CCD Imaging and Processing/Deep Sky

At the Heart of the Heart

Posted By Jim Thommes
Well, the Heart and its various parts have been popular lately...

Here is an image of the "Heart of the Heart" I had taken recently. This region is also refered to occasionally by the cluster Melotte 15. This is an HaRGB composite with the Ha as the Luminance channel.

A full size image and exposure / processing details are here:

http://jthommes.com/Astro/IC1805C.htm
(be sure to click on the image for full size)

Artemis285 - Astronomik Ha, Edmund Optics RGB
C8 (203 mm) at f/4.6
G11/Gemini
Guiding - WO Megrez 80 mm APO, DSI Pro, K3CCDTools
Ha:R:G:B >> 80:12:12:12

A full size of the Heart Nebula - IC 1805 taken in 2005 is here:

http://jthommes.com/Astro/IC1805.htm

October 16, 2007 03:49 AM Forum: CCD Imaging and Processing/Deep Sky

IC 63

Posted By Jim Thommes
Here is an image of IC 63 in Cassiopeia. This one is taken without Gamma Cas (Navi) since that makes the image so much more challenging. A full size image and exposure / processing details are at:

http://jthommes.com/Astro/IC63.htm

C8 at f/4.6
Artemis285
G11/Gemini
guiding: WO Megrez 80 mm, DSI Pro, K3CCDTools
Ha:R:G:B >> 80:12:12:12

October 21, 2007 06:49 PM Forum: CCD Imaging and Processing/Deep Sky

NGC 7789

Posted By Jim Thommes
Nothing very special, but here is a relatively old (1.6 billion years est.) open cluster NGC 7789. I think I see a whirlpool or rose petal pattern to this fairly dense cluster. A full size image and exposure / processing details are at:

http://jthommes.com/Astro/NGC7789.htm
(be sure to click on the image for full size)

This is my first image with the William Optics Reducer / Flattener III. I think it does a good job and with the smallish 11 mm diag ICX285 CCD (Art285), this reducer can go a little further than the advertised 0.8x compression. I think it falls off the cliff much past 0.68x compression though.

Megrez II 80 mm APO at f/5.9 (FFIII)
Artemis285, Astronomiks filter drawer
G11 / Gemini
Guiding - C8 at 1350 mm FL, DSI Pro, K3CCDTools

October 26, 2007 12:36 AM Forum: CCD Imaging and Processing/Deep Sky

The Spider and the Fly

Posted By Jim Thommes
Here is an image of IC417 (the spider) and NGC 1931 (the fly). Full size image and exposure / processing details are at:

http://jthommes.com/Astro/IC417.htm
(be sure to click on the image for full size)

I needed to go fairly deep for this and the color data was weak. The Luminance was Ha and being that the color was weak, most of the blue reflection in this image is not evident.

Megrez II APO at f/5.2 (WO FF III)
Artemis285
G11/Gemini
Guiding - C8 at 1350 FL, DSI Pro, K3CCDTools

An earlier image (March 2004) of just IC 417 is in my Archives here:

http://jthommes.com/MiscAstro/Archives/IC417.htm

October 28, 2007 11:32 PM Forum: CCD Imaging and Processing/Deep Sky

The Little Dumbbell

Posted By Jim Thommes
Here is M76. This object has been always been a tough capture for me. This time harder because I had some guiding problems, but I managed to save some of the data. A full size image and exposure / processing details are at:

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

C8 203mm at f/7.3
Artemis285
G11/Gemini
Guiding - Megrez II, DSI Pro,

Earlier image from 2003:

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


November 8, 2007 05:10 AM Forum: CCD Imaging and Processing/Deep Sky

The Owl Cluster

Posted By Jim Thommes
Greetings,
I processed data for NGC 457, the Owl Cluster (or some prefer the ET Cluster). Last time I visited this in an imaging session was 2003. I don't think it has changed much since then ( :

A full size image and exposure / processing details are here:

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

C8 at F/5.6
Artemis285
G11/Gemini
Guiding - WO Megrez (at 1350mm FL), DSI Pro, K3CCDTools

The 2003 version is here:

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

November 12, 2007 02:12 AM Forum: CCD Imaging and Processing/Deep Sky

IC1311 Region in Cygnus

Posted By Jim Thommes
It is pretty late in the season for Cygnus. I had taken this data back in early October. Well here it is finally. There is s little trouble with the reducer causing odd corner stars.

A full size image and exposure / processing details are at:

http://jthommes.com/Astro/IC1311.htm
(be sure to click on the image for full size)

WO Megrez II 80 mm APO at f/4.3
Artemis 285
G11/Gemini
guiding - C8 at 1350 mm FL, DSI Pro, K3CCDTools
HA:R:G:B >> 64:16:16:16 minutes


November 18, 2007 08:50 PM Forum: CCD Imaging and Processing/Deep Sky

NGC 2403 - Close in

Posted By Jim Thommes
Here is a November 3 image of a favorite subject of mine - NGC 2403. This one is my best. A full size image and exposure / processing details are at:

http://jthommes.com/Astro/NGC2403.htm
(be sure to click on the image for full size)

C8 at f/6.2
Artemis 285
G11/Gemini
guiding - Megrez II at 1350 mm FL, DSI Pro, K3CCDTools

Earlier images are at:

http://jthommes.com/MiscAstro/Archives/NGC2403.htm
(2005)

http://jthommes.com/MiscAstro/Archives/NGC2403A.htm
(2004)

November 27, 2007 04:59 AM Forum: CCD Imaging and Processing/Deep Sky

Sharpless 140

Posted By Jim Thommes
Here is a rather obscure object - Sharpless 140. I got the data on it back in October. A full size image and exposure / processing details are at:

http://jthommes.com/Astro/SH2-140.htm
(be sure to click on the image for full size)

I suspect the region toward the upper left is somewhat dust strewn. This field is only 32 arc minutes wide. I wonder what a larger deeper field might show?

C8 (203 mm) at f/4.8
Artemis285 - Ha RGB
G11/Gemini
guiding - Megrez II 80 mm, 1350 mm FL, DSI Pro, K3CCDTools
Ha:R:G:B 80:12:12:12


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