Quote:
Originally Posted by Jsmitt94
It has to be the position of the prism or the spacing between the guide cam and the OAG.
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Assuming the camera is working, and the prism is pointing towards the scope objective, it then has to be distance between the guide cam CCD and the mirror in the OAG..... this distance has to be equal to the distance from the mirror in the OAG to the imaging cameras CCD plane.
I just pointed the scope into the middle of the milky way, with the guide cam positioned at approx the right distance, focus the imaging cam, then adjust the distance of the guide cam along its stalk on the OAG rig.