Backfocus Calculation.

Questions and feedback about the rotator itself, adapters, de-rotation etc
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NjAstro
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Joined: Tue Sep 06, 2022 4:14 am

Backfocus Calculation.

Post by NjAstro »

Looking at purchasing the rotator but having issues trying to make the rotator fit in my image train.

Camera 17.5 QHY 268M
Filter Wheel 17.5 QHY 36 mm Slim Filter wheel
OAG 10MM QHY Medium

If I add the Filter wheel to end of the draw tube does the 19MM for the Rotator count toward the overall backfocus? Is there a way to make this all work?
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Evans
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Re: Backfocus Calculation.

Post by Evans »

Placement order does not matter. If the total distance is higher than optimal backfocus then you need to find another solution
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