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Posts Made By: Jim Thommes

June 27, 2010 01:23 AM Forum: CCD Imaging and Processing/Deep Sky

The Eagle - M16

Posted By Jim Thommes
This is a semi wide field of the Eagle Nebula. Image and details are at:

http://www.jthommes.com/Astro/Eagle.htm
(click the image for full resolution)

In doing this pic, I took Ha and full luminance data along with the RGBs. I did a lighten combine on the luminance over the Ha. (Richard Crisp can describe the issues of Ha only for Luminance.) The monochrome result for that is here (also a link on the Eagle page):

http://www.jthommes.com/Astro/images/M16_MN152_HaLum2.jpg

Scope: Mak-Newt 152 mm at F/4.8 (Explore Scientific David Levy scope)
Camera: ST8300M - Astronomik 1-1/4" Ha, LRGB filters
Mount: G11/Gemini
Guiding: Megrez 80 mm at 555 mm FL, DSI Pro, PhD Guiding


July 14, 2010 02:50 AM Forum: CCD Imaging and Processing/Deep Sky

Shooting Low - Cat's Paw Nebula

Posted By Jim Thommes
Here is an image of NGC6334. I am shooting it pretty low (no more than 20 degrees over the horizon). Sorry for the funky star shapes. I don't know if this was guiding or just atmospheric effects low to the horizon. Image and exposure / processing details are at:

http://www.jthommes.com/Astro/NGC6334.htm
(click on the image if you want higher resolution)

The red seems to predominate even after taking into account atmospheric extinction. I have heard that this object shines through some interstellar dust (attenuating the shorter wavelengths more than the longer).

Scope - Mak-Newt 152 mm @f/4.8
Camera - ST3800M 1-1/4 inch Astronomik Ha LRGB filters
Mount - G11/Gemini
Guiding - Megrez 80 mm at FL 555 mm, DSI Pro, PhD Guiding



July 25, 2010 11:57 PM Forum: CCD Imaging and Processing/Deep Sky

The Lobster (Still Shooting Low)

Posted By Jim Thommes
Here is an image of NGC 6357 also known as the Lobster Nebula. It is low on my horizon (peaks out at about 21 degrees). I'm glad I was able to get the data I got on this one. Image and exposure / processing details at:

http://www.jthommes.com/Astro/NGC6357.htm
(other resolution / Ha data available on the links)

Scope - Explore Scientific MN 152 at f/4.8
Camera - ST8300M Astronomik 1-1/4 inch HaLRGB filters
Mount - G11/Gemini

Guiding - Megrez 80 mm at 555 mm FL, DSI Pro, PhD Guiding

August 1, 2010 12:09 AM Forum: CCD Imaging and Processing/Deep Sky

The Elliptical Globular - M19

Posted By Jim Thommes
Not a particularly notable image, but I did catch M19 in a rather large field. It is generally not the appropriate image scale for a globular, but I do think the larger field serves to illustrate the asymmetry of this globular. The image is at:

http://www.jthommes.com/Astro/M19.htm

(you can click on the image for a higher resolution showing the cluster a bit larger.)

Scope - Explore Scientific MN152 at f/4.8
Camera - SBIG ST8300M (Astronomik 1-1/4 inch LRGB filters)
Mount - G11/Gemini
Guiding - Megrez II at 555 mm FL, DSI Pro, PhD Guiding

August 10, 2010 04:02 AM Forum: CCD Imaging and Processing/Deep Sky

M20 and M21

Posted By Jim Thommes
The Trifid is always a favorite target this time of year. Here is my contribution for this year - it is a wider field framed with M21. Image and details at:

http://www.jthommes.com/Astro/M20-21.htm
(click on the image for a larger size)

Optic - 152 mm Mak Newt at f/4.8 (Explore Scientific - Levy)
Camera - ST8300M Astronomik 1-1/4" Ha LRGB filters
Mount - G11/Gemini
Guiding - Megrez 80 mm at 555 mm FL, DSI Pro, PhD Guiding

August 23, 2010 12:41 AM Forum: CCD Imaging and Processing/Deep Sky

NGC 6820 and NGC 6823

Posted By Jim Thommes
This is a HaLRGB image of the cluster NGC 6823 and the emission nebula NGC 6820. The conditions were pretty good for me all data captured in one evening. Image is at (click image or link for larger size) :

http://www.jthommes.com/Astro/NGC6823.htm

Scope: Explore Scientific MN152 (David Levy) Mak-Newt at f/4.8
Camera: ST8300M (Astronomik HaLRGB 1-1/4 inch filters)
Mount: G11/Gemini
Guiding: Megrez II 80 mm at FL 555 mm, DSI Pro, PhD Guiding

August 31, 2010 03:21 AM Forum: CCD Imaging and Processing/Deep Sky

SH2-155 The Cave.

Posted By Jim Thommes
Maciej recently posted an SH2-155. I had one in the oven that I had been working on....

Here is the result. It's a bit wider field and I picked up vdB-155 (I think) in the lower right. Interesting coincidence, Sharpless 155 and van den Bergh 155 in the same field (if I have identified properly - please let me know if I am wrong). Image and details are at:

http://www.jthommes.com/Astro/SH2-155_Cave.htm

I may have pushed more than the data would warrant - but there seems to be some interesting stuff there.

Scope - Explore Scientific MN152 Mak Newt at f/4.8
Camera - ST8300M ( Astronomik 1.25" HaLRGB filters)
Mount - G11/Gemini
Guiding
Megrez 80 mm at 555 mm FL, DSI Pro, PhD Guiding

September 3, 2010 02:58 AM Forum: CCD Imaging and Processing/Deep Sky

A pair of M31 Satellite Dwarfs

Posted By Jim Thommes
Here is a image of NGC 147 and NGC 185. These are dwarf galaxies believed to be M31 satellites. M31 is about 7 degrees south of the field in this image. Image is at:

http://www.jthommes.com/Astro/NGC147-185.htm

Imaged with the small camera on a minimal setup....
Scope - Zenithstar 66 mm APO
Camera - Artemis285 (Edmund Optics RGB filters)
Mount - CG5 (Celestron ASGT)
Guiding - Homemade 180 mm FL guide optic, DSI Pro, PhD Guiding

September 21, 2010 04:51 AM Forum: CCD Imaging and Processing/Deep Sky

IRIS (NGC 7023) Wide Field

Posted By Jim Thommes
All,
I have been out of town recently, but I'm back and here is an image of the Iris Nebula in wide field that I took back in August. Image is at:

http://www.jthommes.com/Astro/NGC7023Wide.htm

Scope: 152 mm Mak-Newt at f/4.8
Camera: ST8300M
Mount: G11/Gemini
Guiding: Megrez 80 mm refractor at 555 mm FL, DSI Pro, PhD Guiding

October 3, 2010 06:32 PM Forum: CCD Imaging and Processing/Deep Sky

IC 1396 and vdB 142

Posted By Jim Thommes
All,
Here is my shot of IC 1396 this season. It is an HaRGB image. I think this object does OK with this data set. Image is here:

http://www.jthommes.com/Astro/IC1396_Elephant.htm
(click on the image for full resolution version)

Scope - Zenithstar 66 mm APO at f/4.5
Camera - ST8300M, Astronomik 1.25 HaRGB filters
Mount - G11/Gemini
Guiding - C8 at 1350 mm FL, DSI Pro, PhD Guiding

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