Hi I have the following setup:
ASI1600MM, ZWO EFW, ZWO OAG.
Backfocus to camera can vary
I want to use the OAG with a Lodestar X2 camera (backfocus 12.5mm), what extensions do I need? Thanks
Please refer to this guide and calculate the back focus you need, to decide whether you will need a extender and which do you need.
https://astronomy-imaging-camera.com/tutorials/best-back-focus-length-solutions-55mm.html
