200 inch Hale + Apogee camera =?

This is from a post by Don Clement over in the vendor forum at CN. He won a contract to install one of his low-profile focusers in the prime-focus cage of the 200 inch Hale Reflector. They then (for fun?) used a Apogee U9000D7 camera to grab this image of M51:

http://s72.photobucket.com/user/miltons_stuff/media/Messier51_P200LRGB_web_small_zpsbf214c11.jpg.html

The scope was working at f/3.3 with a Wynne corrector. No details given on the exposure or processing, but they probably binned 4x4 to get a reasonable sampling number at the 16.7 m FL.

Good, fast, cheap, pick any two... 8)

Hi Jim,
Thanks for posting the image. Old, outdated, in almost dark skies, and still a performer you just can't beat Made in America.

BTW on the subject of Don's focusers, they are great! I have (4) of them one on each astrograph including a primary mirror driver on the 8"F/2.6 in almost 9 years of service I have burned out several robotic focus motors and driver electronics but NEVER had a single issue with one of Don's focusers. They are outstanding...Dave