Quote:
Originally Posted by Cyberman
Hello, Could someone give me some advice which coma corrector to get for my skywatcher Quattro 250 F4 Newtonian, thanks Rob.
|
Hi Rob,
I use a baader MPCC mk3 on my 200mm f/4. As with everything on these fast newts, the spacing is really fussy. I could never get a perfectly flat field but I got it to the point where it is 15% across an APS-c sized sensor. I would suggest that’s not bad and you’d have to be really pixel picking to pick it up but is it perfect ? No.
Hope this helps
Cheers
Ryan