Quote:
Originally Posted by White Rabbit
Thanks guys.
Alpal you don't have to re calibrate after the meridian flip if you have the correct set up. This is the part that I don't understand I can't understand if it's the camera that won't swap/read calibration data after the meridian flip or the software.
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don't have to re calibrate
I've never understood that.
I am not a mechanical engineer but if you were to use a Newt. then
the focuser, OAG & camera would be on top of the OTA at say before the meridian &
underneath the OTA after the meridian.
There is apart from the RA & DEC axes a 3rd rotational axis from the
leverage of the focuser & camera.
I can't see how they mechanically can be the same in terms of
controlling what is a dual axis closed loop control system with a 3rd rotational axis.
I have noticed that some people put a weight balance on the side of the Newt.
directly opposite the focuser to counterbalance this axis.
In practice I suppose the Newt. could become too heavy to do that.