Image of the day

Captured by
RICHARD COFER

Trifid Nebula

My Account

New to Astromart?

Register an account...

Need Help?

Posts Made By: Jim Thommes

December 6, 2004 09:37 PM Forum: CCD Imaging and Processing/Solar System

M78 with Webcam

Posted By Jim Thommes

I hesitate to post this M78 after Warren Keller's very fine image, but here is a mid sized thumbnail.

Full sized image along with exposure / processing details are at:

http://jthommes.com/Astro/M78.htm

Jim Thommes
http://jthommes.com/Astro

December 12, 2004 05:23 PM Forum: CCD Imaging and Processing/Solar System

Fetus Nebula NGC 7008

Posted By Jim Thommes

Here is an image of the Fetus Nebula with my ToUcam SC3 and my C8 SCT. The focal length was kind of long (the horizontal field of view is 8 arc minutes), but the tracking was good and the image survived.

Total of 45 minutes of exposure. Perhaps a bit short for f/10 but otherwise OK...

I have attached a mid sized thumbnail. Full size image and exposure / processing details are at:

http://jthommes.com/Astro/NGC7008.htm

Jim Thommes
http://www.jthommes.com/Astro/


December 22, 2004 03:49 PM Forum: CCD Imaging and Processing/Solar System

NGC1491

Posted By Jim Thommes

Here is a recent image I made of NGC 1491. I used my C8 at f/5 - it is a slower narrow field for me then I normally use with my H-Alpha filter. Normally I try to shoot HA at f/2.8 to f/4 with 3-4 minute exposures. This image includes a 6 x 5 minute exposure - I really can't go too much longer than 5 minutes with my webcam.

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

http://jthommes.com/Astro/NGC1491.htm


Jim Thommes
http://jthommes.com/Astro/

December 31, 2004 06:05 PM Forum: CCD Imaging and Processing/Solar System

M37 and M38

Posted By Jim Thommes

Here are some open clusters in Auriga...

I have processed two separate images one of M37 and one of M38. M37 is the richer cluster of the two so I attached a mid sized thumbnail of M37. Full sized images and processing details are at:

http://jthommes.com/Astro/M37.htm

and

http://jthommes.com/Astro/M38.htm

The scope is a C8 with f/3.3 focal reducer and ToUcam SC3 camera.

Jim Thommes
http://jthommes.com/Astro/

January 2, 2005 05:45 PM Forum: CCD Imaging and Processing/Solar System

The Jellyfish - IC443 (mosaic)

Posted By Jim Thommes

Here is an image I made of the Jellyfish Nebula. It is a two frame mosaic. The individual frames are HaLLRGB constructions and the mosaic was combined in Photoshop. I have attached a mid sized thumbnail, the full size image as well as exposure and processing details are at:

http://jthommes.com/Astro/IC443.htm

Scope was my Megrez II ED operating at f/4.1 and my camera was a ToUcam SC3.

Jim Thommes
http://jthommes.com/Astro

January 8, 2005 12:07 PM Forum: CCD Imaging and Processing/Solar System

Open Cluster NGC1528

Posted By Jim Thommes

Here is a open cluster I was able to image from my light polluted front yard. I have attached a mid sized image of NGC1528, a full sized image with processing and exposure details is at:

http://jthommes.com/Astro/NGC1528.htm

The scope was my C8 with the Meade f/3.3 focal reducer. The optical path was at f/2.8. The camera was my ToUcam SC3.

January 16, 2005 03:48 PM Forum: CCD Imaging and Processing/Solar System

IC2118 Witchhead

Posted By Jim Thommes

Here is a challenging object for those of us with small format CCDs - first because of its size, a good 3 degrees of sky and second because of its faintness. I have attached a mid sized thumb nail of my attempt. Full size image and exposure / processing details at:

http://jthommes.com/Astro/IC2118.htm

Scope - Megrez II f/2.6 two frame mosaic. Camera - ToUcam SC3

Jim Thommes
http://jthommes.com/Astro/

January 23, 2005 03:31 PM Forum: CCD Imaging and Processing/Solar System

Machholz LRGB, Jan 15

Posted By Jim Thommes

I went unguided at sidereal rate and was about 35 - 40 minutes from Luminance to last blue frame. Needless to say the comet moves a fair distance in that time.

I wondered if processing would be hopeless. It was not. I was able to align the comet image separately from the star field on the LRGB channels. The overall result turned out to be worth saving.

I have attached a midsized thumbnail - full sized image and exposure processing details are at:

http://jthommes.com/Astro/Machholz0114.htm

Scope - Megrez II at f/2.6; Camera - ToUcam SC3. For reference to star charts, time was 15 Jan 2005 7:45 UT, North is 25 deg to the Right from top.

Jim Thommes
http://www.jthommes.com/Astro/

February 7, 2005 10:32 PM Forum: CCD Imaging and Processing/Deep Sky

Medusa Nebula PLN205+14.1

Posted By Jim Thommes

It has been a while since I had posted on Astromart - thought I would check in with this image.

Here is an image of a planetary nebula that has a fairly good response on a H-Alpha exposure. I have attached a mid size thumbnail - a full size image and exposure / processing info at:

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

Scope is a C8 at f/2.8 - Camera is a ToUcam SC3.

Jim Thommes
http://jthommes.com/Astro/

February 28, 2005 10:01 PM Forum: CCD Imaging and Processing/Deep Sky

Double Cluster

Posted By Jim Thommes

Nothing real special here. Its just that in early in February I was out intending to image some narrow field objects. However, the seeing was poor. So rather then packing up and going home, I decided to image some wide field subjects that would be more tolerant of the seeing. I imaged the Double Cluster - here is a mid sized thumbnail version of the result.

Full size image and exposure / processing details are available at: (be sure to click on the page image for a full size version)

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

The image is a two frame mosaic taken with my Megrez II and my ToUcam SC3 camera.

Jim Thommes
http://jthommes.com/Astro