Quote:
Originally Posted by avandonk
From my questions all over the 120ED is not as good as the 100ED or 80ED but you have to look very hard at high mag to even start to pick it. For a start it is a hard ask to be as good at f/7 as f/9. End of story!
Bert
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true, very true, but from some of the images I have seen you could do a lot worse with bad guiding of seeing. either way it would be nice to use. Would you need to use a field flattener with it?