[SteamWake]

Originally Posted by kv29

wider angle = more light gathering

http://www.museum.wa.gov.au/exhibiti...its/latest.asp

http://www.usscod.org/conn.html

Close.... Bigger aperature (opening) more light gathering. Field of view is actually a function of the eyepiece.

http://www.maritime.org/fleetsub/pscope/index.htm