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Thread: outer M42*0
giving you plenty of room for all your astrophotography needs
This means that you can focus with an eyepiece
Enjoy the Beauty of the Night Sky Anywhere
of course what matters the most is how well they perform in their intended use
M42-M42 Extender 183MM Thread: outer M42*0Attached 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
US$ 129.50
US$ 199.50
US$ 118.44
