|
I am still tossing up between the QSI683 or the QHY9.
there is a saving of $2500 if i purchase the QHY over the QSI with essentially the same filterwheel and filters and OAG setup albeit it isnt integrated with the QHY and the filters are a little further away from the CCD chip than the QSI. can the vignetting be overcome by using 50mm filters rather than 31mm filters if the filters are a little further away from the CCD Chip?
John
|