Quote:This link refers you to a post I made in the ATM forum. It's perfectly relevant for binoculars, and shows the mechanism behind aperture reduction when one's iris is smaller than the exit pupil.
Quote:Simple minds discuss people. Good minds discuss events. Great minds discuss ideas. - Hyman Rickover
Quote:The minds which discuss binos are the ones which refuse to be handicapped by the reduction in signal to noise that squinting with one eye imparts.
"The heavens declare the glory of God"...
Mr. Stacy From: Seattle, WA Proud to be a Cloudy Nights Member since 9/15/02* Celestron NS11 GPS - Stellarvue Raptor 90mm APO* Vixen Ultima 8X56 - Fujinon 10X50 FMT-SX - Nikon 7X50 ProStar - Vanguard Endeavor ED 8X42 - Nikon Action Ex. 7X35More cowbell please!