I want to use my Canon 300mm f/2.8 telephoto lens as a spotting scope, and would like to use a binoviewer with it, probably the Baader Maxbright. I’ve been searching the web and found some tutorials about converting your lens to a scope, but nothing about using a binoviewer with this setup. Has anyone tried this, is it physically possible? I know a need a barlow to get focus to infinity with one eyepiece (when using a 45° prism), but will this be sufficient when I use a binoviewer? Also, I want a magnification of 30x so with the 2X barlow in between I would need 20mm eyepieces, is that correct and what kind of eyepieces would you recommend? Preferably with a large afov. Any feedback will be appreciated.