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Qhy9m to WO P-Flat 4 correct distance
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27-11-2015, 06:47 PM
Atmos
(Colin)
Ultimate Noob
Join Date: Aug 2011
Location: Melbourne
Posts: 6,984
What calculation have you used for the QHY9 back focus distance? The QHY9 manual mentions 15mm, I have read of others using 17mm and then others saying that it is 16.2mm when taking the CCD chamber glass plate into the equation.
Atmos
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