I am having issues with plate solving since I installed a new computer in my observatory. I have tracked this down to variations in the camera angle reported when plate solving an image. I would have thought that the camera angle reported when doing a plate solve should be fixed but I am finding that it changes depending which side of the meridian I am on. For example, for subs that I am taking of M83, it is reporting a camera angle of 356.73 degrees when the OTA is on the west side of the pier and pointing east. It is then reporting a camera angle of 176.87 degrees for the same object after the meridian flip (when then OTA is on the east side of the pier and point west).
I tested this tonight by moving the scope around and executing a blind solve at various position. Objects on the eastern side of the meridian are reporting approximately 357 degrees and objects on the west side of the meridian are reporting approximately 177 degrees. This is causing a problem and I cannot select ‘centre now’ on an object from the home position as the plate solve fails because it thinks that it has the wrong camera angle (aprox 180 degrees instead of aprox 360 degrees).
My set up is a Skywatcher EQ8 running EQMOD for mount control.The control computer is running windows 7.
Maybe I don’t understand how the camera angle measurement works but my assumptions was that the camera angle is what it is and shouldn’t change. I don’t recall having this problem either before I had to install a new computer and reload all of the software.
Any thoughts on this to assist would be much appreciated.
Thanks in advance,