This is very strange:
http://www.optcorp.com/qhy-9-mono-wi...heel-qhy9.html
If you look at the QHY9 camera there is no nose piece in the optical train.
They say that it has a
back focus of 35mm.
Quote:
|
This QHY 9M comes with a five-position filter wheel for 36mm filters, and has a total backfocus of 35 mm.
|
Then they show a picture of the camera with a nose piece.
My back focus with my QHY9 is about 70mm with
the nose piece, filter wheel & OAG.
This means that I can't use it with the available 3" coma correctors.
Can anyone explain this?
( PS - I wrote to OPT to ask them )
cheers
Allan