Thank you for your support and feedback.
1 About the zero position, there is a mechanical Zero position inside the CAA, and it can not cross this position during rotation. so there is no way to set the rotation direction.
2 The mechanical angle is different from plate solve angle. the angle shows in the ASIAIR is plate solve angle.
3 For the meridian flip problem, we add a feature named 'rotation range' to solve this, if the users choose 360 degrees, which means the CAA will rotate within 360 degrees, in this case, it will rotate 180 degrees after meridian to make sure the image have the same angle as the image before meridian.
If the users choose 180 degrees, which means the CAA will rotate from machanical ZERO position to mechanical 180 degrees position, or rotate from mechanical 180 degrees to mechanical 360 degrees. the range depends on the current mechanical position. in this case, it won't rotate 180 degrees after meridian, because it will think that consider 10 degrees and 190 degrees to be the same.
For these two suggestions, i forwarded to our team.
1) Add into the FITS header the CAA rotation angle
2) Add the CAA rotation angle into the filename options (custom)
Also, we noted all feedback you post, we really appreciate that and will try our best to optimize as soon as possible. If there is any suggestions please do not hesitate to tell me.
Thanks a lot.
