There's no better way to focus an astro camera than with a knife edge focuser. The ronchi grating makes focus quick and easy. Comes with modular mounts for Olympus and ST5C. Also included is the True Knife edge option for very precise focus. Shipped with factory provided 25mm Plossl eyepiece with rubber eyecup. The diagnol means no more neck strain when focusing near the zenith! Unit is in good condition with only some minor cosmetic paint chips as you can see.
$150 shipped to CONUS only. PayPal preferred, but will accept money order or bank check.