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Lion Nebula SH2-132 - RC71

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Posts Made By: Jim Thommes

May 20, 2007 09:45 PM Forum: CCD Imaging and Processing/Deep Sky

Draco Trio

Posted By Jim Thommes
Here is the less well known "Trio" in the winter/spring sky. Image as well as exposure and processing details are at:

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


C8 at f/6
Artemis285 Camera
ASGT Mount
L:R:G:B 60:12:12:12

June 3, 2007 06:39 PM Forum: CCD Imaging and Processing/Deep Sky

M53 and NGC 5053

Posted By Jim Thommes
Greetings all,
I have a couple of images of M53 close up and in widefield. The widefield also shows NGC 5053.

M53 close up (C8 at f/7.1):
http://jthommes.com/Astro/M53.htm

M53 wide field with NGC 5053 (Megrez II at f/4.8):
http://jthommes.com/Astro/M53_NGC5053.htm

Each page has exposure and processing details. Click on the image for full size.

I have some earlier images in my archives:

http://jthommes.com/MiscAstro/Archives/M53.htm (2004)

And earlier:
http://jthommes.com/MiscAstro/Archives/M53A.htm (2003)

June 11, 2007 03:50 AM Forum: CCD Imaging and Processing/Deep Sky

NGC 4725

Posted By Jim Thommes
Well, I'm still stuck in Galaxy season. (I will be for a bit until I proces some of the outstanding data.) Here is NGC 4725 - an oject I think should be imaged more than it is. A full size image and exposure / processing details are at:

http://jthommes.com/Astro/NGC4725.htm
(click image for full size)

June 17, 2007 10:11 PM Forum: CCD Imaging and Processing/Deep Sky

NGC 5247 Galaxy

Posted By Jim Thommes
Here is a pic of a smallish but interesting galaxy. I have a full size image and exposure / processing details at:

http://jthommes.com/Astro/NGC5247.htm

Did this one with my C8 at f/7.5.
L:R:G:B 48:15:15:15

I think I have one more data set on galaxies - then it's off to doing some nebulas.

June 23, 2007 04:35 AM Forum: CCD Imaging and Processing/Deep Sky

Coma Cluster

Posted By Jim Thommes
Well Folks, looks like this is my last image from galaxy season - on to nebulas and clusters.

This is the Coma Cluster - I guess there are quite a few galaxies there. Full size image is at:

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

C8 @ f/3.3, Artemis285

July 2, 2007 04:17 AM Forum: CCD Imaging and Processing/Deep Sky

M16 Eagle - HaRGB

Posted By Jim Thommes
Greetings,
A popular object this time of year is M16. I didn't realize it had been 4 years since I had a camera on it last. Here is a recent image. A full size image and exposure / processing details are at:

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

Scope - C8 at f/3.3
Camera - Artemis285
Guided Vesta 690 LE and K3CCDTools 3.

The earlier 2003 image was not an Ha based image. It is amazing this object can be done without Ha. This 2003 image can be seen here:

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




July 9, 2007 03:18 AM Forum: CCD Imaging and Processing/Deep Sky

Rho Ophiuchus

Posted By Jim Thommes
Here is an image of IC 4603 and IC 4604. These objects are many times seen in a wider field including the nearby Antares, M4 area. Here is a narrower field. I had intended to do a 2 frame mosaic, but the glass on my Vivitar 180mm SLR lens is not good enough to handle the bright Antares. Full size image and exposure / processing details are at:

http://jthommes.com/Astro/IC4603.htm

Optics - 180 mm Vivitar SLR lens
Camera - Artemis285

July 15, 2007 09:44 PM Forum: CCD Imaging and Processing/Deep Sky

Prawn Nebula - HaRGB

Posted By Jim Thommes
Greetings all,
I was able to get a fairly southern object - IC 4628. At my 32 degrees latitude, this object tops out at about 16 degrees above the horizon. I was at a good viewing location with good conditions. This is an Ha, RGB image with Ha as the luminance. A full size image and exposure / processing details are at:

http://jthommes.com/Astro/IC4628.htm

The scope was my Megrez II at f/4.3
Camera was an Artemis285

Also, this is one of the first images I have done with my new G11/Gemini mount. I have been really pleased with it over my ASGT. One feature I really like with the G11 is the ability to image past the meridian for up to 2 hours (30 degrees). Of course the increased accuracy and more sophisticated sky model are real pluses too.


July 24, 2007 02:29 AM Forum: CCD Imaging and Processing/Deep Sky

Star Fields and Clusters

Posted By Jim Thommes
Here are some star cluster test shots as I was taming tube flexure on my G11 dual mounting. Nothing special- I had the data so I processed it.

One is the Globular NGC 5897 in Libra and the M24 region in Sagittarius. Images are here:

http://jthommes.com/Astro/NGC5897.htm

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

In general, I worked out the flexure issues. I had to brace the C8 on it's rail and my adjustable mount for my Megrez II had some slop that needed tightening. I have an adjustment mechanism that allows about a 6 degree adjustment on the Megrez II so I can center guide stars (or image if I am guiding with the C8).

Images are made with my Artemis285. The Globular was a combination of 1x1 bin and 2x2 bin on the Luminance.

July 29, 2007 05:16 AM Forum: CCD Imaging and Processing/Deep Sky

Sh2-112 - Ha RGB

Posted By Jim Thommes
Hi Folks,
Below is a link to an image I made of Sh2-112. Attention in Cygnus is sometimes dominated by the North American Nebula and the Pelican. I picked this up and Sh2-115 in the vicinity earlier this month (Sh2-115 to come later.)

Full size image and processing / exposure data are at:

http://jthommes.com/Astro/SH2-112.htm

This is an Ha RGB image with a C8 at f/3.7 and my Artemis285


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