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"The Wall" NGC 7000

Started by jthommes, 09/07/2005 04:57AM
Posted 09/07/2005 04:57AM Opening Post
Here is an image I took of "The Wall" portion of the North American Nebula. I used 2 scopes, my Megrez II and my C8 with the Meade f/3.3 reducer. By combining images from the two scopes, the C8 can capture central detail well, while the Megrez produces good edge stars and image.

I have attached a mid size image. A full size image with exposure and processing details are at:

http://jthommes.com/Astro/NGC7000Wall.htm

Total exposure time was 74 minutes.


Attached Image:

jthommes's attachment for post 26621

Jim Thommes

Mak-Newt 152 mm
C8
Megrez II APO
Zenithstar 66 mm APO
G11/Gemini
ST8300M
Artemis285 Camera
Canon 350D DSLR

http://jthommes.com/Astro/
Posted 09/07/2005 10:06AM | Edited 09/07/2005 10:07AM #1
That's fantastic Jimmy.

I like the way you extract maximum performance out of your gear.

How did you combine the 2 images as they would be different image scales? Did you resize them first?

Greg.
Posted 09/07/2005 03:10PM #2
Gorgeous. Thanks for posting all of the processing details on your page. You have certainly put a lot of work into the composite image! Jim
Posted 09/07/2005 08:37PM #3
Thanks guys for the comments...

Greg,
Yeah, the two scopes have different fields - but not substantially so. It's really not much different from aligning RGB's to a luminance. Astroart has a coregister function based on three stars. IRIS can do it as well based on three stars. Both do a scale, rotate, skew as needed to align the stars. I believe there is another program called Registar that does the same thing but taking into account more stars.



Jim Thommes

Mak-Newt 152 mm
C8
Megrez II APO
Zenithstar 66 mm APO
G11/Gemini
ST8300M
Artemis285 Camera
Canon 350D DSLR

http://jthommes.com/Astro/
Posted 09/08/2005 01:38AM #4
Outstanding image Jim. Of coarse, I don't think I've ever seen a bad one from you.