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Posts Made By: Tyler Allred

May 20, 2010 05:50 AM Forum: CCD Imaging and Processing/Deep Sky

M104

Posted By Tyler Allred

Nice one Greg. You picked up some detail in the dust lanes and on the surface of the disk as well. Sweet!
Cheers,
Tyler

May 21, 2010 11:31 AM Forum: CCD Imaging and Processing/Deep Sky

NGC6188

Posted By Tyler Allred

Very nice Greg! I love that incredibly wide field.

May 21, 2010 11:13 PM Forum: CCD Imaging and Processing/Deep Sky

NGC 6888 with AP130 F8.35

Posted By Tyler Allred

That looks really great Jeff!
Cheers,
Tyler

May 21, 2010 11:24 PM Forum: CCD Imaging and Processing/Deep Sky

Large Dob (20"+) For Astrophotography?

Posted By Tyler Allred

Hi Mike. I'll take a shot at answering this question. I have only seen a few imagers who use large dobs... Al Kelly is the main one who comes to mind. The problems with big dobs are pretty tough. First, you would be working with a long focal length, so any error in tracking is magnified. Second, the things are like a big sail in the wind. Even the slightest breeze would have them shaking like a leaf. Third, the field rotation is another problem, but it can be dealt with using a derotator, assuming all the other problems were solved. I think that most imagers using a big dob have them mounted on an eq platform, but most of those platforms are not really smooth. I have seen some wonderful images taken with big dobs on split ring mounts. If you decide to get serious about spending cash, I know a guy who builds world class split ring mounts for dobs. He mostly uses his for scientific work, but occasionally takes a break and takes "pretty pictures" (as he calls them). smile Each of his mounts is custom made... nothing is mass produced. If you are interested, send me a private message and I can send you contact info. I think his mounts probably start at about the cost of a Paramount, and go up from there. That is my 2-cents worth.
Cheers,
Tyler

May 22, 2010 10:24 PM Forum: Birding Optics and Photos

Caliope Hummer

Posted By Tyler Allred

And another... They sure are beautiful birds.
Cheers,
Tyler

May 22, 2010 10:30 PM Forum: Birding Optics and Photos

Lazuli Bunting

Posted By Tyler Allred

And another... This time showing the back and side a little better.
Cheers,
Tyler

May 26, 2010 03:41 PM Forum: Birding Optics and Photos

A Black Phoebe

Posted By Tyler Allred

Beautiful Ken!

May 29, 2010 03:13 PM Forum: CCD Imaging and Processing/Deep Sky

Centaurus A 15 hours and blue jet

Posted By Tyler Allred

Superb Greg!
Cheers,
Tyler

May 29, 2010 10:57 PM Forum: Birding Optics and Photos

Caliope Hummer

Posted By Tyler Allred

Thanks for the nice comments.
Cheers,
Tyler

May 29, 2010 10:57 PM Forum: Birding Optics and Photos

Lazuli Bunting

Posted By Tyler Allred

Thanks for all the nice comments.
Cheers,
Tyler