I know I'm starting another thread, but I got multiple issues I'm trying to tackle.
I have the W.O. Z61 doublet and this issue been around since I purchased it last year November.
I am just not experienced and was even less experienced 6 months ago so I didn't think this was an issue
The closest thing I can compare the shape the stars upon zooming in is a 4-leaf clover shape.
Like the star is divided into 4 pieces . I know it's not out of focus, because the Bathinov mask shows excellent focus.
Is it out of collimation? It has tiny plastic screws under the dew shield, no indication of what they do.
I know I've been having some issues getting a flat field before I even looked at this, and that's with the dedicated flattener attached.
One side of the image always look like the stars are egg shaped, while the other and the center looks better.