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Lion Nebula SH2-132 - RC71

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Posts Made By: Jim Thommes

March 12, 2007 01:18 AM Forum: CCD Imaging and Processing/Deep Sky

A couple of Messier Open Clusters

Posted By Jim Thommes
Hi All,

I have been off on a skiing holiday. (Thought I would take advantage of the weather since it wasn't cooperating for Astronomy.) I did have some open cluster data that I had before I left (scraping the bottom of the barrel). Here are the links to the images:

http://jthommes.com/Astro/M50.htm
http://jthommes.com/Astro/M93.htm

(Click on the image for full size - it seems the stars get lost on the smaller images.)

I was out last night and the haze was so thick, best I could do was Saturn. I know it's not the right forum, but if you want a peek, it's here:

http://jthommes.com/Astro/saturn_Mar07.htm

March 20, 2007 03:24 AM Forum: CCD Imaging and Processing/Deep Sky

M106

Posted By Jim Thommes
I managed to get some good data on M106 Thursday night. I was really tired at work the next day, but I had to get out when conditions were good.

I wish I had done a better job on the framing - I cut off part of M106 - didn't realize it extended as far as it did. I also cut off NGC4248 in the lower left.

Here is the link to the image. Exposure and processing data is there as well:

http://jthommes.com/Astro/m106.htm
(Click on the image for a full size version)

I have some earlier images of M106:

http://jthommes.com/MiscAstro/Archives/m106.htm
(This done with a ToUcam SC3 RAW mod - 2004)

And for a real hoot, here is one of my real early attempts:
http://jthommes.com/MiscAstro/Archives/m106A.htm


March 27, 2007 02:39 AM Forum: CCD Imaging and Processing/Deep Sky

NGC 3184 (*limited data*)

Posted By Jim Thommes
So here is a lesson that you can only get in an image the data that is there.

I recently did a somewhat hasty image set of NGC 3184. I found this object somewhat dim for my F/8 set up. I thought I would post what I did get out of the data anyway. What turned out to be really weak was the color data. Image as well as exposure and processing data are at:

http://jthommes.com/Astro/NGC3184.htm


April 2, 2007 01:30 AM Forum: CCD Imaging and Processing/Deep Sky

Sharpless 301 - HaRGB

Posted By Jim Thommes
Here is Sharpless 301. It is an HaRGB image. It's been tough for me lately. This data came between twilight and the fog rolling in. Thank goodness Ha can do a respectable job in civil twilight.

Full size image and exposure and processing details are at:

http://jthommes.com/Astro/SH2-301.htm
(Be sure to click on the image for full size)

Ha:R:G:B 56:12:12:12

April 10, 2007 02:54 AM Forum: CCD Imaging and Processing/Deep Sky

M41 - LRGB

Posted By Jim Thommes
I have had a lot of trouble with clouds lately - not much data. I did have some data from early March of M41 and have done the processing. The image as well as exposure and processing data are here:

http://jthommes.com/Astro/M41.htm
(click on the image for full size)

An earlier image from 2004 is here:

http://jthommes.com/MiscAstro/Archives/M41.htm

April 16, 2007 05:13 AM Forum: CCD Imaging and Processing/Deep Sky

Whirlpool Galaxy

Posted By Jim Thommes
Well, some really fine images on this object by Dan and Jason are followed by one from me... I guess we are likely to see a few more of these before the season is up.

Full size image and exposure / processing details are at:

http://jthommes.com/Astro/m51.htm

This image was a bit of a challenge. Seeing was pretty good and the wind was calm. However there were variable high clouds throughout the night. I take my Luminance exposure, then my R G B exposures in separate batches (rather than interleaved). Therefore, more clouds during say red exposures than during blue exposures disrupts the color calibration. So in this image I unfortunately had to *calibrate* the color by eye.

For reference, Here is the earlier image:

http://jthommes.com/MiscAstro/Archives/m51.htm

And yet an even earlier image:

http://jthommes.com/MiscAstro/Archives/m51(2003).htm


April 24, 2007 03:17 AM Forum: CCD Imaging and Processing/Deep Sky

NGC 2467 HaRGB

Posted By Jim Thommes
Here is NGC 2467 (AKA Sharpless - 311). This is an Ha RGB image. A full size image and exposure / processing details are at:

http://jthommes.com/Astro/NGC2467.htm

I also have an earlier image of this object here:

http://jthommes.com/MiscAstro/Archives/NGC2467.htm

(OK, I know it is Galaxy season, I almost feel off topic, but I enjoyed shooting it before it set.)


April 29, 2007 12:59 AM Forum: CCD Imaging and Processing/Deep Sky

M61 - Virgo

Posted By Jim Thommes
I have never imaged M61 before - don't know why, but I took the opportunity to do so. I went with a little wider field since there was a bit of a breeze during my imaging sessions and I was struggling with the long focal length originally intended. As such, I ended up framing the image to also capture NGC 4292 and NGC 4301.

Full size image and exposure / processing details are at:

http://jthommes.com/Astro/M61.htm


May 5, 2007 11:55 PM Forum: CCD Imaging and Processing/Deep Sky

NCG 4559 LRGB

Posted By Jim Thommes
Here is NGC 4559 in Coma Berenices. I have struggled with weather this winter/spring. This session was clear but windy so there was a little struggle with mount stability. Overall though, in scaling back to 1400+ mm FL, I am reasonably happy with the image.

Full size image and exposure / processing details are at:

http://jthommes.com/Astro/NGC4559.htm


C8 f/7.1
ASGT Mount
Artemis285 camera

May 16, 2007 04:02 AM Forum: CCD Imaging and Processing/Deep Sky

Markarian's Chain (at least part of it)

Posted By Jim Thommes
This is really a shot of M86 and other objects in the same field. The full Markarian's chain is cut off toward the upper left.

We have had virtually no rain, but it has been hard to find clear nights. This image was taken with high variable clouds. They tend to play heck with the color data, so this is an image that has been color *calibrated* by eye.

Full size image and exposure / processing details are at:

http://jthommes.com/Astro/M86Group.htm

Megrez II f/4.3
Artemis285
ASGT Mount

Here is an earlier image from March 2004:

http://jthommes.com/MiscAstro/Archives/M86Group.htm

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