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Old 07-06-2020, 10:58 AM
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Astronut07 (Ben)
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Join Date: Apr 2018
Location: Sydney
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Simon

According to ZWO information camera sensor is 6.5mm inside housing
So if u add 6.5mm plus OAG 29mm ( 35.5mm ) total

Minus 35.5mm from 75mm= 39.5mm

Therefore if Im correct you would need 39.5mm in spacers to get correct focus
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