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How critical is the spacing when using a ZWO, QHY, or comparable Camera

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#26 AntMan1

AntMan1

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Posted 29 March 2019 - 05:49 PM

I got two different answers from Stellarvue. On the phone i was told that this method was spot on. But next in an email i was told that it was not accurate. Regardless of the lack of help I went from 55mm to 62mm and i am sticking where my stars look best at 57.50 mm which is way out of the advertised 55 mm backfocus. My stars are horrible at 55 and st perfect at 57.50 pointed at the zenith. I will be picking up feathertouch focuser installed at NEAF by Starlight instruments to eliminate the focuser sag 




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