Hi, I'm about to order the Starsweeper .5x reducer on my N11. I plan to
screw it into my 2" AP MaxBright Diagonal for visual use. I also plan to
use it with the "Astro-Physics 35MM Camera Adapter with out T-Ring" for
Astrophotography with an OM-1. Does anyone know the actual amount of focal
length reduction I will get in these two configurations or have an equation
to figure it out?