Thread: Back focus (again)
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Old 17-01-2020, 04:14 PM
Imme (Jon)
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Join Date: Aug 2017
Location: Kyneton
Posts: 840
Sensor window to chip face on the asi1600 is 6.5mm from memory.........so you need a 50mm spacer from the corrector to front window (thread) of corrector
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