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M94

Started by jthommes, 06/26/2006 03:00AM
Posted 06/26/2006 03:00AM Opening Post
Here is a Messier Object that I had not done before.

Full size image and exposure / processing details are at:

http://jthommes.com/Astro/M94.htm



Attached Image:

jthommes's attachment for post 32199

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 06/26/2006 04:10AM #1
Nice image! This is well beyond my meager focal length. You do amazing things with your equipment.

Tom

Starsearch Observatory
Lat 42N 47' 00" Long 112W 10' 47"
Elev 1752m
www.tvdavisastropics.com
Posted 06/26/2006 04:38AM #2
Very nice work Jim! I don't know how you do it, but you always manage to produce really nice images. I have trouble guiding with my G-11 at the focal lengths you are using. Great stuff!

"The expression of the beautiful is in direct ratio to the power of perception acquired by the artist." (Gustave Courbet)
Posted 06/26/2006 03:21PM #3
That's a great job on a difficult object, Jim. Even the large image looks good.
You have excellent star colors and great detail in the galaxy core.
I agree with Tom and Tyler that you have a mastery of your equipment.
My only suggestion for improvement on this image would be to soften the transition from galaxy to background. M 94, as you know, has a very extended outer halo including its unusual 'dark donut'. You would probably need long exposures from a dark site to see the 'donut', but I think that showing whatever halo data that you have (even if it's noisy) would be more 'faithful' to M 94's appearance. A lot of imagers believe that showing a bit of grain in an image is not a bad thing.

dan
Posted 06/26/2006 03:36PM #4
Nicely done Jim! 8)
Beautiful detail around the core..., like a string of pearls... wink

Ivan Gastaldo 8)
Coconut Creek, FL

Ivan's Observatory
Lat 26N 16' 48" Long 80W 10' 48"
[COLOR="Red"]Personal Website:[/COLOR] http://www.ivangastaldo.com

CCD Imaging and Processing/Deep Sky - Moderator
I like to complain about everything - Moderator
Posted 06/27/2006 03:44AM #5
Thanks for the comments guys...

Dan, I have to laugh a little bit. I was reading up on M94 a bit and your comment fits right in. I have heard this darker ring on the outside of M94 wit a very faint ring beyond that. So upon close inspection, I see evidence of this darker ring in my luminance data. When I was processing, I assumed it was some kind of circular gradient so I kind of dark pointed it out.

I wonder if I should try to go back and process it more faithfully...


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/