Quote:
Originally Posted by Amaranthus
You might not want to hear it, but it really does look like differential flexure.
|
Barry, have you had flex in the past? If so how did you fix it (or at least try to fix it) and were you successful?
I have determined that the proper tube rings may be to blame with the felt lining allowing flex (even when clamped tight).
I was able to calculate about 15 microns of tilt every 10 minutes. Given the camera is hard bolted with steel and aluminium to the dovetail this is the only other point on the guidescope for movement.
Thermal expansion and subsequent tilt between camera clamp and guidescope tube rings yields << 1 micron of tilt.
I cam confident it is not the imaging train at this stage.
I still really wonder if it is a setting somehow causing the star to be continuously chased in RA
