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Posts Made By: Jim Thommes

December 11, 2005 04:30 PM Forum: CCD Imaging and Processing/Deep Sky

Galaxy - IC 342

Posted By Jim Thommes
Here is an image of IC 342. It is an object mostly obscured by the dust of our own galaxy. I have attached a mid sized image, but a full size image can be accessed at:

http://jthommes.com/Astro/IC342.htm

Scope was C8 at f/5.1, camera was an Artemis285.

I had to expose fairly long (for me). And the data was still a bit noisy - I had to do a fair amount of noise reduction.
L:R:G:B 63:18:18:18

December 15, 2005 10:41 AM Forum: CCD Imaging and Processing/Deep Sky

Horsehead Season

Posted By Jim Thommes
Hi All,
Here is a horsehead I did recently. I have attached a mid size image, but full size image and exposure / processing detils are at:

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

I did use HA exposures for the Luminance construction along with some straight luminance exposures.

HA:L:R:G:B - 49:16:9:9:9

December 18, 2005 02:55 PM Forum: CCD Imaging and Processing/Deep Sky

Horsehead and Flame

Posted By Jim Thommes
Recently I posted a Horsehead image. Dan pointed out that my webpage header, by editorial mistake, promised a Flame as well. (Thanks for that catch Dan.) Here is a wider field image that has the Horsehead, Flame and other friends. I have attached a midsize image, but a full size image as well as exposure and processing details are at:

http://jthommes.com/Astro/Horsehead-Flame.htm

Scope was my Megrez II at f/3.8 and the camera was an Artemis285

December 22, 2005 04:34 PM Forum: CCD Imaging and Processing/Deep Sky

M74 Galaxy

Posted By Jim Thommes
Here is a shot of M74. This one always seems to be a challenge for me. I have attached a mid size thumbnail but a larger image as well as exposure / processing details are at:

http://jthommes.com/Astro/M74.htm


This is a 2x2 bin luminance in this image in order to get sufficient signal. Scope was my C8 at f/8 and the camera was an Artemis285.

December 27, 2005 12:29 PM Forum: CCD Imaging and Processing/Deep Sky

Western Heart

Posted By Jim Thommes
Here is an image of the Western portion (right side) of the Heart Nebula. It is the region in the general vicinity of LBN655 and LBN656. I have attached a mid size image, but a full size image and exposure / processing details are at:

http://jthommes.com/Astro/LBN655-56.htm

The full frame image of the Heart Nebula is here: (note that the two images are separated in orientation by 90 degrees):

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

This was done on my drivway with substantial light pollution. Thank goodnes for HA filters.

January 5, 2006 05:30 PM Forum: CCD Imaging and Processing/Deep Sky

M38 Region

Posted By Jim Thommes
This image shows some of the region around M38. In addition to M38 there is the open cluster NGC1907 and two nebulas - IC417 and NGC1931. Sorry for the poor focus. I have attached a mid size image, but a full size image as well as exposure / processing details are at:

http://jthommes.com/Astro/M38.htm

Luminance channel was a mix of visual wideband and H-Alpha data.

January 13, 2006 12:07 PM Forum: CCD Imaging and Processing/Deep Sky

Rosette Nebula - HA and RGB

Posted By Jim Thommes
Here is an image I made in December of the Rosette Nebula. I have attached a mid size image, but a full size version of the image as well as exposure and processing details are at:

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

Scope was my Megrez II at f/3.1, Camera was an Artemis285.

January 18, 2006 08:15 PM Forum: CCD Imaging and Processing/Deep Sky

Christmas Tree Nebula

Posted By Jim Thommes
I know it is past the Holiday season, but here is an image of the Christmas tree Nebula. I have attached a mid size image, but a full size image and exposure/ processing details are at:

http://jthommes.com/Astro/ngc2264.htm

Scope was C8 at f/3.3, camera was an Artemis285.

January 24, 2006 09:29 PM Forum: CCD Imaging and Processing/Deep Sky

Crab Nebula

Posted By Jim Thommes
Late in December I took an image of the Crab Nebula. This object is a fun target. I enhanced the Luminance exposure with an H-Alpha exposure before doing an RGB combine. I have attached a mid size image, but a full size image and exposure and processing details are at:

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

Scope was my C8 at f/8, Camera was the Artemis285. HA:L:R:G:B - 42:20:8:8:8


January 28, 2006 03:17 PM Forum: CCD Imaging and Processing/Deep Sky

M81 Galaxy

Posted By Jim Thommes
Tom Davis recently posted a lovely image of M81. I have attached a version I worked on from data taken under pretty good conditions. The attached is a mid size image, but at full size image with exposure and processing details are at:

http://jthommes.com/Astro/M81.htm

The Scope was my C8 at f/5.6 and the camera was the Artemis285.
Time - L:R:G:B - 42:12:12:12

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