Hi all,
I'm new to astrophotography and just wondering how to determine magnification when using a CCD webcam at prime focus.
(The webcam lens has been removed) I am assuming when image is in focus the CCD sensor is at prime focus???
I am using a 200mm Newtonian with 1200mm focal length and CCD sensor is 4.6X4.0mm in size.
Thanks for any feedback.
Cheers,
Peter