Quote:
Originally Posted by multiweb
That's 22.5mm diagonal. My QHY8 is 28.4mm. I'd never get a field like that without flattener. I had to get a WO P-FLAT IV. That's why I want to get a QHY9 with a much smaller sensor.
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I have a WO P-FLAT III here but i can't use it when using the OAG
The QHY9 works bloody well and even when it is 25C it can make -20C.