I have an issue with my 3KORRR / 3 inch Reducer factor x0.73 Corrector (on my ASA12N), I start to suspect it could be defect, I always get star trails in the top-left direction in the image after a lot of calibration atempts with glatter laser and Catseye tools.
See attached image
Left image: corrector at my default mount position[/font][/size]
Right image: corrector rotated about 45 degree while the CCD camera is held in the same position
(the images showing the top-left part of the whole image – exposure time 3 sec)
Anyone else have hade similar problems? I awaits answer from ASA support