I'm not sure how these filters are rated but I need a 1-1/4" neutral density filter that will block 60-80% of the light coming in.
I pay via PayPal only. E-mail price shipped to 48045.
PS. I'm using a Starlight Xpress H-916 on a 10" SCT. When imaging planets, they are way over exposed even with the fastest possible shutter speed and 1x1 binning. Let me know if I'm just doing something wrong please. I'm new at CCD imaging.