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Posts Made By: Jim Thommes

September 10, 2005 03:50 PM Forum: CCD Imaging and Processing/Deep Sky

M103

Posted By Jim Thommes

Open Cluster M103. Nothing particularly exciting, I enjoy imaging an open cluster from time to time.

I have attached a mid size image; full size image and exposure / processing details are at:
http://jthommes.com/Astro/m103.htm

Scope was a C8 at f/10; Camera was an Artemis 285

Total exposure time - a short 33 minutes.


September 11, 2005 02:34 PM Forum: CCD Imaging and Processing/Deep Sky

Helix Nebula

Posted By Jim Thommes

Here is an image of NGC 7293 that I took in Late August. It is a combination of Ha , straight luminance, and RGB exposures. I have attached a mid size image; full size image and exposure / processing details are at:

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

Scope is a C8 at f/6.2, Camera is an Artemis 285.

Exposure time was 81 minutes HA:L:R:G:B 30:24:9:9:9.


September 16, 2005 08:18 PM Forum: CCD Imaging and Processing/Deep Sky

NGC7331 and Friends

Posted By Jim Thommes

Here is an image of NGC 7331 and the Deer Lick Group.

I have attached a midsize image but a full size image as well as exposure and processing details are at:

http://jthommes.com/Astro/NGC7331.htm

Scope is a C8 at f/6.2 and the camera is the Artemis285

Exposure time 69 minutes L:R:G:B 33:12:12:12

September 18, 2005 04:50 PM Forum: CCD Imaging and Processing/Deep Sky

M33 - Two Views

Posted By Jim Thommes

Dan Kowall had recently posted an M33 with a HA enhancement. Here is my offering (only witout the HA).

I have taken two images of M33. The first image is a "North Up" presentation. The second image is a close up with the presentation rotated 90 degrees to get the full object in the FOV.

I have attached mid sized image of the close-up (rotated) view, but the full size of the first image as well as exposure and processing details can be accessed at:

http://jthommes.com/Astro/m33.htm

The second (close-up) image shows the best resolution on object detail. Its on the same page, but it can be accessed directly at:

http://jthommes.com/Astro/m33.htm#M33-2

First image L:R:G:B - 30:9:9:9.
Second image L:R:G:B - 50(2 scopes):7:7:7

September 24, 2005 11:59 AM Forum: CCD Imaging and Processing/Deep Sky

LBN400 (SH-119)

Posted By Jim Thommes

Here is an image of LBN 400 (or SH-119). It is an emission complex east of the North American Nebula. I have attached a mid size image. A full size image and exposure / processing details are at:

http://jthommes.com/Astro/LBN400.htm

Scope was Megrez II at f/4.2 and the camera was an Artemis285.

Exposure time was 67 minutes

I had some funny halos on the stars due to the heavy stretch. And I think I had some gravitational sag in the set up - the stars on the right are softer and less focused than the stars on the left.


September 28, 2005 08:45 PM Forum: CCD Imaging and Processing/Deep Sky

Galaxy NGC 7793

Posted By Jim Thommes

Here is a somewhat southerly object imaged recently. I have attached an image. Full size image and exposure / processing details at:

http://jthommes.com/Astro/NGC7793.htm

Scope was a C8 at f/10, Camera was the Artemis 285.

Slow scope, dim object, and low on the horizon forced me to do this at 2x2 bin on the luminance. Although I did only expose 45 minutes.




October 8, 2005 02:50 PM Forum: CCD Imaging and Processing/Deep Sky

M30

Posted By Jim Thommes

OK, here is a pretty ho-hum object. Here is M30,a pretty compressed Globular cluster. SEDS says it has undergone core collapse, the core is pretty tight and hard to resolve cleanly.

I have attached a mid size image, but a full size image and exposure / processing details are at:

http://jthommes.com/Astro/M30.htm

Scope was a C8 at f/8, Camera was an Artemis285
Exposure - L:R:G:B 44:8:8:8.



October 9, 2005 10:19 PM Forum: CCD Imaging and Processing/Deep Sky

The Baby Nebula - IC1848 Region

Posted By Jim Thommes

Here is an image of the "Baby Nebula" just East of the more well known "Heart Nebula" (IC1805 region). I have attached a mid size image but a full size image and exposure / processing details can be seen at:

http://jthommes.com/Astro/LBN677-672.htm

The Scope was my Megrez II at f/3.2, The camera was an Artemis285.

I had some trouble with some coma and star shapes when I applied a minimum filter. Other than the edge stars, I was kind of happy with the result.

HA:R:G:B - 50:8:8:8

October 20, 2005 10:00 PM Forum: CCD Imaging and Processing/Deep Sky

Pac Man - NGC 281

Posted By Jim Thommes

Here is an image of NGC 281. The framing of the object is a bit awkward and I wish I had framed it better. But, I thought the data was good and worth sharing the processed image. I have attached a mid sized thumbnail, but a full size image and exposure / processing details can be accessed at:

http://jthommes.com/Astro/NGC281.htm

Scope was a C8 at f/5, Camera was an Artemis285.

Exposure time - 36:12:9:9:9 HA:L:R:G:B.


October 23, 2005 06:21 PM Forum: CCD Imaging and Processing/Deep Sky

IC 1396 Region

Posted By Jim Thommes

Here is an image of the IC 1396 emission nebula complex. I used a 180 mm FL f/3.5 lens (Vivitar). With the Art285 CCD this gets me my desired 170' to 180' HFOV. I have attached a mid size image, but a full size image and exposure / processing details can be accessed at:

http://jthommes.com/Astro/IC1396_Elephant.htm

Optic was 180 mm FL SLR camera lens at f/3.5, Camera was an Artemis285.

Exposure HA:L:R:G:B 80:12:8:8:8