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Telescope or lens

William Optics ZenithStar 81 / ZS81

williamoptics.com/.../zenithstar-81
TypeRefractor: semi-apochromatic
Diameter81 mm
Focal length559 mm
Weight3.50 kg
Users 183
Images 1838
Most often used with
ZWO ASI533MC Pro
Known retailers Agena Astro  ·  High Point Scientific