I was puzzling this out the other night and I still can't seem to feel right about it. To work out the effective field of view when observing, the equation is: Apparent field of view of the eyepiece/magnification, ie. 52 degree 10mm plossl used in a 1000mm FL scope gives an effective field of view of 0.52 degrees. True? This is regardless of the OTA aperture. And this is the part that isn't sitting right with me. Surely having twice the aperture will affect the effective field of view. It just stands to reason to me that if I have a bigger hole in the wall I can see further to the side than through the smaller hole.
Can someone break this down gently for me.
