William Optics Gran Turismo 81 (f/6.6) / GTF81
Telescope or lens

William Optics Gran Turismo 81 (f/6.6) / GTF81

williamoptics.com/.../GTF81-User_Guide-1.pdf
TypeRefractor: Petzval
Diameter81 mm
Focal length535 mm
Weight3.70 kg
Users 21
Images 137
Most often used with
ZWO AM5