[APML] Coma corrected SCT Part 2

[Duncan Munro <dmunro@sfu.ca>]

Hi all. I've finally had a chance to do some more testing with CCs and 
SCTs. I tried out my Baader MPCC last night. It's a definite improvement 
over the Lumicon CC. I'll be posting some sample images on my website 
shortly. With the MPCC and a 10" F6.3 OTA I get a coma free field about 
30mm in diameter. The Lumicon could manage about 20mm. Again, I'm 
guessing that either CC would produce a coma free field over a full 35mm 
frame with an SCT @ F10, which is tempting.

BTW, my Meade 208xt produced excellent results with my 10" F6.3 OTA, 
Lumicon NEG, and EQ-6 Skyscan GEM. I was a bit worried about guiding on 
the uncorrected stars at the edge of the FOV but the 208xt had no problems.

cheers

Duncan Munro

http://www.sfu.ca/~dmunro/


_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo