[Zuts]

Hi,

I am trying to setup my Celestron edge 9.25 for photography.

In the attached image my stars are all eggy in one direction. The image is a stack of 5 by 120 second exposures. The exposures were all guided with an average rms error of 0.3.

I don't think it is sensor tilt as on my TV85 the stars appear nice and round.

1. However I have removed/replaced the corrector for cleaning so maybe it is replaced in the wrong position?

2. Until I get a counterweight extension bar the scope is severely unbalanced, could this be the issue?

Any thoughts appreciated.

Re-processed with synthetic colour

Cheers
Paul