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Setup
Hi Steve
Collimation is basically perfect (< 1"), the camera is square to the optical axis of the scope as evidenced by CCDInspector. BDF is at 10" which is what the manual says is optimal.
I spent a day getting these basic things right. Internal reflections are possibly a culprit, the tube of the RCOS is flocked but perhaps I need to get a can of dead black spray paint to ensure that there are no reflections from the baffling. What about stray light? The flaring exclusively associated with bright stars which would suggest, at least to me, that it isnt stray light. The instrument bay in which the RCOS is housed is mostly kept dark, but there is some illumination from power supplies and the telescope position sensor (to ensure I dont close the roof on the scope).
All advise is welcome
Thanks
Lars
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