William Optics Cat Mounting Ring - M-MR50RC-BL Astrographs It runs on 8 AA

It runs on 8 AA batteries (batteries are NOT included)

Fold down rubber eyeguard for comfortable viewing as well as blocking stray light

Controlled with SynScan Pro app for iOS and Android

2” with Twist-Lock connection is a mirror diagonal which will serve your observing well for many years

William Optics Cat Mounting Ring - M-MR50RC-BL Astrographs It runs on 8 AAWilliam Optics Cat Mounting Ring William Optics Cat Mounting Ring Allows mounting the WO Space Cat Clamshell Type Mounting Ring Suitable to mate with the (Optional) Cat Saddle and Handle This is the William Optics Cat Mounting Ring. This WO Mounting Ring uses the standard clamshell type open close attachment method to secure or release your telescope instrument. The Cat Mounting Ring from William Optics is provided in black anodized aluminum