Posts Made By: Duncan Kitchin

very nice!

what is the total field of view?

Best Regards
Duncan

wow! That's spectacular. Love the diffraction spikes also. How did you create those?

Best Regards
Duncan

still having some declination issues - I'm continuing to test and hopefully get to the point where I have a working setup, but there are some lingering issues that prevent me from getting that far.

The declination tracking seems to be behaving rather strangely, and I don't know quite why. It could be some flexure issues (quite possible) or maybe something in the mount.

There are a couple of issues:

there is some strange "lag" behavior in the dec axis that I don't see in the RA axis. Not a backlash issue (that's another story), but rather after a correction has been applied I see the mount start to move a couple of seconds after first application of correction, and then continue to move a couple of seconds after the correction input stops.

the second one is that the drift in declination is inconsistent. It will stay at a constant (and correctable) rate for a few minutes, and then suddenly start moving much faster, with the correction becoming ineffective. It drifts from its holding point by about 30-50 arcseconds before slowing down and gradually moving back on station.

Has anybody encountered this before? I'm kind of new to this... so I don't really know if this is expected behavior under some known set of conditions

Many thanks for any advice...

Best Regards
Duncan