Posts Made By: Nat Burgio

Hello fellow Astromarters,

I'm new to maksutovs and I just recently purchased a cute little Pico Mak from Japan. As I was defocusing during a star test I noticed a vertical black line passing through the diffraction rings. (Illustration is attached) The black line moved sideways as I move the scope to the left and right. I don't think its effecting my optics but I'd like to know if anyone has experienced the same effect and can explain what the cause may be.

Thanks

Nat
PS I'm on Australian time.
Cheers