William Optics Gran Turismo 81 WIFD Triplet APO (T-GT-81 WIFD) Pro This ZWO Hand Controller is

This ZWO Hand Controller is designed to be used with the Electronic Automatic Focuser (EAF)

9 Minimum Magnification 17 Maximum Magnification 236 Light Gathering (compared to next size down) 44% General Info Focuser 3

75 Protect window AR window Dimensions 86mm Diameter Weight 640g Back Focus Distance 17

astrophotographers can cut down on the problems caused by periodic error to get smoother tracking and better performance from an autoguider resulting in a sharper

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William Optics Gran Turismo 81 WIFD Triplet APO (T-GT-81 WIFD) Pro This ZWO Hand Controller isThe New Gamechanger Introducing the William Optics Internal Focus Design (WIFD) Apochromatic Series. This innovative and revolutionary design combines a precision (Patented) internal focusing mechanism with the highest quality optics available, providing the ultimate Apochromatic refractor for astrophotography. Designed from the ground up with the ability to handle the newest generation of large, heavy, high resolution cooled cameras, the rock solid