Count among them the EON 80mm ED Apochromatic Refractor Telescope from Orion Telescope and Binoculars based in Watsonville, California. Apochromatic refractors, or APOs as amateurs call them ...

Orion’s ED80T CF Apochromatic Refractor Telescope is a 3.15-inch (80mm) f/6 optical tube assembly. It comes with a 2″ dual-speed Crayford focuser, a 2″ dielectric star diagonal, a 2″-to ...