Unable to figure out reason of jerk

[Taqwa Space Observatory]

Greetings!
We have our ASA DDM 85 A mount perfectly balanced and with stable PID graph but we are getting such images which is showing kind of a jerk, not trailing. Any possible solution for this?

[MichiP]

Hi
Have you been able to fix this issue? It would help to see a star disc. Make an unsharp photo of a star where we can see all the rings nicely.
What kind of telescope is it?

Possibly the mirror is held too tight, or it is moving. 

You also have a strong vignetting. 

Michael 

[robertp]

Hi,

could you post the part of the ClServoLogs-file for the time where the image was taken? Maybe that gives us a clue to what might be the root cause.

Robert

P.S.: You posted several questions and problem descriptions within the last few months and in most cases got recommendations how to fix the problem. Would you mind to also let us know whether those recommendations were helpful, whether the problem still exists or whether you managed to resolve it and how? That would be very beneficial for us all in case we see similar issues. Thanks!