ZWO M42-M42-21mm Extension

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AUD $29.00

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Extender designed to help you to reach 55mm or any other back focus distance

21mmextend

Attached with the ASI071MC-C.

21mmextender

The extender is designed to help you to reach 55mm or any other back focus distance.

In this example the aim is to reach 55mm with an OAG: attach the 21mm extender to ASI071 to reach 55mm back focus distance:17.5mm+21mm+16.5mm=55mm

oag_set6

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oag_set8

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