7 Dec
2003
7 Dec
'03
8:40 a.m.
I've been following these threads about astronomy suitable binoculars with interest. I'm curious to learn about how the power rating translate. What's the difference between a 12x30 vs. 15x70, for example? Are there any good web sites that explain this? My initial Google searches came up with lots of irrelevant hits. Thanks! Rich Allen