1200 tracking accuracy at 3100mm focal length


John J. Kasianowicz <surpher@...>
 

Nice images! The picture of M82 has a lot of detail.


I've tried a Nikon teleconverter with my 12.5" f/7 newt on the AP 1200 GTO
mount. It figures out to be 3100mm focal length at f/10 with the
teleconverter.
I did some 2 hour exposures of NGC 891 and M-82. Tracking was excellent.
The AP 1200 is certainly up to the difficult task of tracking at long
focal
lengths. See the pics at:

NGC 891
http://www.koyote.com/users/bobm/ngc891.htm

M-82
http://www.koyote.com/users/bobm/m82.htm


Bobby Middleton <bobm@...>
 

I've tried a Nikon teleconverter with my 12.5" f/7 newt on the AP 1200 GTO
mount. It figures out to be 3100mm focal length at f/10 with the
teleconverter.
I did some 2 hour exposures of NGC 891 and M-82. Tracking was excellent.
The AP 1200 is certainly up to the difficult task of tracking at long focal
lengths. See the pics at:

NGC 891
http://www.koyote.com/users/bobm/ngc891.htm

M-82
http://www.koyote.com/users/bobm/m82.htm

Bobby Middleton