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Old 11-09-2012, 07:17 PM
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lepton3 (Ivan)
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Join Date: Jan 2007
Location: Adelaide, Australia
Posts: 670
I'm using an orion SSAG guider through a 50mm finder on my C11/CGEM, using PHD. It works fine for 3 minute exposures, but there is differential flexure, so stars in longer exposures could be a bit egg shaped.

It depends what you are trying to image, but f/10 will be a challenge for long exposures, whatever the camera.

-Ivan
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