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[APML] Coma corrector needed ?

Gentlemen,

Having ordered a new Optical Tube Assembly to augment my existing 10"
f/6 Newtonian I have decided upon either a 12.5" or 10" f/4. Not ever
having owned a "faster" scope I am curious if I will need a coma
corrector for this. This will be specifically for 35mm astrophotography.
Also any suggestions as to how I can achieve maximum illumination (ie:
minimal vignetting) would be appreciated. The only coma corrector that I
am aware of is the Lumicon. Are there others ? Any recomendations ?

As always any advice would be greatfully appreciated. FWIW the OTA will
be a Parks

Regards

Bill
-- 
William R. Mattil	| Fred Astaire wasn't so great.
wrmattil@ix.netcom.com	| Ginger had to do it all backwards
(972) 399-4106		| and... in high heels.

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