Quote:
Originally Posted by wayne anderson
...With the Meade f6.3 reducer image scale and coma from a non-flat field seem to be related....
|
This is the case with other reducers... there is a "sweet spot" where coma is minimal, or absent.
I have Celestron C11 and Meade Series 4000 0.63 reducer.. and I am still in search for that "sweet spot".. it is definitely closer than recommended 105mm.