Thread: OAG Focus help
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  #26  
Old 19-09-2018, 09:29 PM
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Lee
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Join Date: Sep 2005
Location: Newcastle, Australia
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Quote:
Originally Posted by Joshua Bunn View Post
I think you should go back to basics.
Make sure the camera works, work out the backfocus of the scope by measuring the distance that the imager comes to focus, then get out some measuring calipers to work out where the guide camera needs to be placed.
This is still what you should do - I think you are getting there, but doing it the hard way.... remember the imaging and guide CCD planes need to be the same distance from the centre of the pick of prism. Get it close with calipers, focus imaging cam then fine tune the guide CCD distance.....
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