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Old 07-06-2020, 10:27 AM
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Joshua Bunn (Joshua)
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Joshua Bunn is offline
Join Date: Oct 2011
Location: Albany, Western Australia
Posts: 1,263
Simon, if you can not get focus, you have to much or too little back focus in your image train for your scope backfocus, or you're trying to focus on something too close.

2 things: 1) what's the back focus of everything in your image train, flattener, adapter, spacing, OAG , filter wheel and camera.
2) try focusing on the stars.

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