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Posts Made By: Jim Thommes

September 1, 2008 08:56 PM Forum: CCD Imaging and Processing/Deep Sky

Wild Duck - M11

Posted By Jim Thommes
This is one of those images taken while waiting for the night's target to rise. This is a recent image of M11 to update an earlier image I had made. Image and exposure / processing details are at:

http://jthommes.com/Astro/M11.htm

C8 at f/4.8
Artemis285 IR/UV Block filter, RGB filters
G11/Gemini
Guiding - Megrez II 80 mm at 1350 mm FL, DSI Pro, PHD guiding

The earlier image is here:

http://jthommes.com/MiscAstro/Archives/M11.htm


September 9, 2008 04:00 AM Forum: CCD Imaging and Processing/Deep Sky

LBN 208 - Cygnus - Ha RGB

Posted By Jim Thommes
I guess here is a bit of an obscure object. But I bet you may have seen it before in a wide field image of the Crescent Nebula. The Crescent is just off the frame toward the bottom. It is an odd orientation, North is at 45 degrees toward the upper left. Full size image and exposure / processing are here:

http://jthommes.com/Astro/LBN208.htm

Megrez II 80 mm at f/5.2
Artemis285 Ha (13 nm Astronomik), RGB filters
G11/Gemini
Guiding - C8 at 1350 mm FL, DSI Pro, Phd Guiding



September 21, 2008 07:05 PM Forum: CCD Imaging and Processing/Deep Sky

Messier 26

Posted By Jim Thommes
Greetings all,
I am back from a little R&R amongst the California redwoods...

Before my vacation, I have a quick image of M26 taken while waiting for a later object. The image and exposure / processing detail are at:

http://jthommes.com/Astro/M26.htm

C8 at f/5.8
Artemis285 IR/UV Blocking filter and RGB filters
G11/Gemini mount
Guiding - Megrez 80 mm at 1350 mm FL, DSI Pro, PHD Guiding

An earlier image is here:

http://jthommes.com/MiscAstro/Archives/M26.htm

October 2, 2008 04:00 AM Forum: CCD Imaging and Processing/Deep Sky

IC 5068

Posted By Jim Thommes
Here is an object with famous neighbors - North American and Pelican Nebulas. IC 5068 is a bit dimmer, but quite interesting. This image also happens to be a two frame mosaic. A full size image and exposure / processing details are at:

http://jthommes.com/Astro/IC5068.htm
(be sure to click on the image for full size)

Megrez II APO
Artemis285 Ha filter and RGB filters
G11/Gemini
Guiding: C8 at 1350 mm FL, DSI Pro, PHD Guiding

An earlier image of IC 5068 done in 2004 is here:

http://jthommes.com/MiscAstro/Archives/IC5068.htm

October 7, 2008 05:18 AM Forum: Digital SLR AstroPhotography

Andromeda - M31

Posted By Jim Thommes
Well, M31 seems to be a favorite this time of year. Congrats to Joe, Pavel and Peter on their recent posts I have taken a turn at it this year. My past turns have been with a CCD. I actually went kind of short with the exposures, but the noise was manageable. I might have been a bit off in focus too - the stars get a bit funky toward the edges. A full size image as well as exposure / processing details are at:

http://jthommes.com/Astro/DSLR/M31DSLR.htm

Megrez II 80 mm at f/5.5 (WO FFIII)
Canon 350D (ACF mod) ISO 800
G11/Gemini
Guiding - C8 at 1350 mm FL, DSI Pro, PHD Guiding

October 7, 2008 05:21 AM Forum: CCD Imaging and Processing/Deep Sky

M31

Posted By Jim Thommes
A bit off topic since this is a DSLR image, but I did want to share with my buds on this forum. M31 seems to be a favorite this time of year. A full size image as well as exposure / processing details are at:

http://jthommes.com/Astro/DSLR/M31DSLR.htm

Megrez II 80 mm at f/5.5 (WO FFIII)
Canon 350D (ACF mod) ISO 800
G11/Gemini
Guiding - C8 at 1350 mm FL, DSI Pro, PHD Guiding

October 12, 2008 04:49 PM Forum: CCD Imaging and Processing/Deep Sky

NGC 247 galaxy

Posted By Jim Thommes
Here is an image of a somewhat dim but nearby galaxy. So I did this with my usual "short time on object", so I dare not stretch more than I did.

http://jthommes.com/Astro/NGC247.htm
(be sure to click on the image for full size)

C8 (203 mm) at f/5.5
Artemis285 camera with IR/UV Block and RGB filters
G11/Gemini
Guiding - Megrez II at 1350 mm FL, DSI Pro, Phd Guiding


October 22, 2008 04:14 AM Forum: Digital SLR AstroPhotography

The Baby Nebula

Posted By Jim Thommes
How about break from galaxies? This object is sometimes called the "Baby" nebula - IC1848 / LBN 672. This is a DSLR image made with a combination of H-Alpha exposures and normal unfiltered DSLR exposures. I think this object reaches about the limit of what I can do with a DSLR as far as signal level is concerned. A full size image and exposure / processing details are at:

http://jthommes.com/Astro/DSLR/IC1848.htm

Megrez II 80 mm at f/5.4
Canon 350D Astronomik EOS 13 nm HA filter, and unfiltered
G11/Gemini
Guiding - C8 at 1350 mm FL, DSI Pro, PHD Guiding

There is a fair amount of star detail in the DSLR image compared to my CCD image, but the nebula signal is very weak.

2005 CCD image here:

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

October 30, 2008 03:37 AM Forum: CCD Imaging and Processing/Deep Sky

NGC 1087 (and other stuff)

Posted By Jim Thommes
Here is an image of NGC 1087, 1090, 1094 and a few other galaxies. The framing is a bit unfortunate as I didn't have a good set up for a little larger FOV - but I made it so they all fit. A full size image and exposure / processing details are at:

http://jthommes.com/Astro/NGC1087-1090.htm

C8 at f/5.6
Artemis285 IR/UV Block and RGB filters
G11/Gemini
Guiding - Megrez II at 1350 FL, DSI Pro, PHD Guiding

November 2, 2008 10:18 PM Forum: CCD Imaging and Processing/Deep Sky

M29 (with background emission)

Posted By Jim Thommes
Here is an image of M29 with 10 min H-Alpha exposures capturing some of the background that seems to be all through the Cygnus region. (Well, I am really not sure of the clusters distance relative to the nebulosity - but I'll still call it background.) A full size image and exposure / processing detail is here:

http://jthommes.com/Astro/M29.htm

Megrez II 80 mm with WO FFIII (f/5.9)
Artemis285 HA, IR/UV Block, and RGB filters
G11/Gemini
Guiding - C8 at 1350 mm, DSI Pro, PHD Guiding

M29 in a 2004 version in a narrower field is here:

http://jthommes.com/MiscAstro/Archives/M29.htm

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