Bague d'extension ZWO 21mm
Bague d'extension ZWO 21mm
7星以再
常规价格
€21,00 EUR
常规价格
促销价
€21,00 EUR
单价
/
单价
ZWO 21mm M42 male/female extension ring
This 21mm thick extension ring allows for easy achievement of the correct distance (back focus) between your ZWO camera and a field flattener.
Most field flatteners require sensor positioning at 55mm. However, with a back focus of usually 17.5mm on ZWO cameras, a 21mm ring is necessary.
Example configuration: ZWO optical divider (16.5mm) + ZWO extension ring (21mm) + ASI071 camera (17.5mm) = 55mm
Black anodized aluminum construction.
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