Hi! Thank you for your replies.
So, if I get it right, the magnification of the bino will be the average value (considering no dominance of one eye)? this is kind of subjective measurement (depending on the person testing the instrument).
During monocular construction, there are a few dedicated softwares that calculate the magnification. Assuming that we would like to construct an 1X magnification instrument (e.g. night vision bino). First, we assemble two monos, measure the magnification and then join them with a bridge to have a bino ( of course, collimation etc. not mentioned here). Thus, if the measured magnifications are the aforementioned, what would be the measured magnification of the bino (by using a beam combiner and only one camera)? if this helps, consider the process for resolution. First, we measure (with the eye) the resolution of each mono and then with a beam combiner we see and measure the resolution of the bino, as a whole.
Hope this clarifies somehow my question!