I have an OAG with a focuser on top. That makes it easy to adjust. Perhaps you can add a helical focuser under your guide camera.
Although , if reducers and or eyepiece projection is used spacers may be required in addition.
Quote:
Originally Posted by PeteG
Thanks Alex. I thought it might not be that straight forward, as you say.
I’m using an Orion thin off axis guider, so a focusser at the back of the ota won’t help. The guidecam is ‘almost’ in perfect focus with the imaging camera, but a tiny tweak makes the guidecam (and phd2 response) spot on.
I think that with a few tweaks of the guidecam spacing I’ll get it better.
Thanks again.
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