Hi Jonathan, > I can usually get to magnitude +6, +7 (sometimes +8 with averted > vision and squinting) with my binoculars, which are 7x35's. Just > out of curiosity, would I see at least a marginal increase if I > were to switch to 8x56's (I am in my 20's, for pupil concerns) ? Absolutely, regardless of your pupil size. The 56mm diameter objectives have 2.56 times the light gathering power of the 35's, which buys you a full visual magnitude, all other factors being equal. If you have 7mm-diameter pupils (and well-corrected vision when your eyes are fully dilated) then you'll benefit from the larger binocular exit pupils of the 8x56's. --Rob ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@satobs.org http://www2.satellite.eu.org/sat/seesat/seesatindex.html
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