SpaceCat 51 WIFD f/4.9 III Hand Controller 125-inches x 42 TPI) Waterproof

125-inches x 42 TPI) Waterproof O-Ring Sealed Argon Gas Purged

Attaches to the computer’s serial port and the telescope’s hand control via a phone jack plug

The size of the controller makes it easy to hold and use while the rocker style design allows the mount to be pushed in multiple directions

Just as Delos eyepieces were developed based on Tele Vue's Ethos eyepiece design advancements

Williams Optics ZS66

SpaceCat 51 WIFD f/4.9 III Hand Controller 125-inches x 42 TPI) WaterproofProbably the very sharpest 250mm camera lens you will find! Newest version uses the new William Optics Internal Focuser Design (WIFD) 51mm quadruplet ED APO f 4. 9 (250mm fl) FPL53 & FPL51 glass 5. 25 lbs weight with rings, dovetail, handlebar. >43mm imaging circle with a flat field edge to edge for full frame sensors Dual Vixen and Arca Swiss Dovetail M48 thread to accept wide t rings t mounts RedCat 51 WIFD III Manual (pdf) Features The best value,