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Tair 3S

pentaxforums.com/.../tair-3s-300mm-f4-5-fotosnaiper-12-ensemble.html
TypeRefractor: achromatic
Diameter66 mm
Focal length300 mm
Weight1.60 kg
Users 16
Images 36
Most often used with
Sky-Watcher Star Adventurer 2i - WiFi
Also available in the following variants:
3-PhS