M42-M42-21mm

Products

ZWO-T2-EXT-21

M42-M42 extender (21mm length )

Enquire for more information or email us specifics at sales@astro.com.sg.

Attached with the ASI071MC-C.

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