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Hi,
I connected - prime focus - my new Canon 550D DSLR (Image Sensor size 22.3 x 14.9mm with multiplying factor 1.6x) to my dob recently to look at the Moon and showed my wife the result using Liveview on the laptop. The first question she asked "what's the magnification"?
I had no answer.
We are used to looking through various eyepieces and learning about magnification so we are interested in this discussion. She and I don't want to get into discussion about a "meaningful concept".
So if my 1200 focal length/50 old film camera = 24x magnification how do I correctly calculate magnification?
Peter
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