Image of the day

Captured by
Douglas Rollain

Lion Nebula SH2-132 - RC71

About Astromart

My Account

New to Astromart?

Register an account...

Need Help?

Posts Made By: Jim Thommes

June 20, 2006 04:02 AM Forum: CCD Imaging and Processing/Deep Sky

M92

Posted By Jim Thommes
Thanks for the comments!

Tyler, guiding can be hit or miss for me. But on a night with good seeing and calm wind it does a good job. Give me some poor seeing and a little breeze - hoowhee, it gets pretty tough for me.

June 24, 2006 04:42 PM Forum: CCD Imaging and Processing/Deep Sky

A Very Dirty Flower -- NGC7023

Posted By Jim Thommes
Tom,
A very lovely image indeed. I think the colors came out very well. Do you do anything special to calibrate colors? G2V? Balanced filters? I notice your RGB exposures are equal time.

Looks like the STL11000 and the ITE MAK Newt is a great combo. Is there a spider structure on the secondary? - I notice the diffraction spikes. I also notice some secondary diffraction spikes on the brighter stars. Do you know where they come from?

Congrats again on the fantastic image.


June 24, 2006 04:48 PM Forum: CCD Imaging and Processing/Deep Sky

Third light with Orion Starshoot... M57

Posted By Jim Thommes
Ivan,
Great shot. As mentioned with the other comments, more data is the next step.

You mention your ALT/AZ mount configuration. Any thoughts of going to a wedge? That might help you get longer exposures particularly as your object approaches zenith.

June 24, 2006 04:52 PM Forum: CCD Imaging and Processing/Deep Sky

M12

Posted By Jim Thommes
Thanks for the comments guys.

Eric, thanks for the encouragement on the globulars. I still have plans to do a few more - well into the Nebula season, so its nice to hear your comment.

June 26, 2006 02:57 AM Forum: CCD Imaging and Processing/Deep Sky

IC7050 - The Pelican Nebula - from Utah

Posted By Jim Thommes
Tyler,
Pretty cool image. Congrats!

The pelican can get kinda washed out in many images because the texture over the image is pretty subtle. You however have captured great detail.

Did you sharpen over the native data? looks very sharp, more so than I would have expected. I am also wondering about the diffraction spikes on the brightest stars - they seem dashed?

Again, congrats on one of the most detailed pelicans I've seen.

June 27, 2006 03:37 AM Forum: CCD Imaging and Processing/Deep Sky

A lesser known area in Sagittarius; IC1283-4

Posted By Jim Thommes
Tom,
Really cool image of an interesting area. I am considering this target. You are certainly showing the way.

June 27, 2006 03:44 AM Forum: CCD Imaging and Processing/Deep Sky

M94

Posted By Jim Thommes
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...


July 4, 2006 06:55 PM Forum: CCD Imaging and Processing/Deep Sky

A preview

Posted By Jim Thommes
Eric,
Nice job!

I really like what the narrowband filters reveal on many objects.

I guess we will be seeing more narrowband stuff from you?

July 4, 2006 06:58 PM Forum: CCD Imaging and Processing/Deep Sky

The Eye of Isengard....in Ha

Posted By Jim Thommes
Fabulous image Vince!

July 6, 2006 12:38 AM Forum: CCD Imaging and Processing/Deep Sky

IC1274 - IC4685 Region

Posted By Jim Thommes
Thanks everyone for your comments...

Eric,
This is a case of "the grass is greener on the other side" I would love the opportunity and the processing challeneges of some of the narrow band imaging you are doing.

Funding Member

Sponsors


View all sponsors

Search