出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/07/18 10:39 UTC 版)
A spotting scope is a small portable telescope with added optics to present an erect image, optimized for the observation of terrestrial objects. They are used for birdwatching and other naturalist activities, for hunting and marksmen, for surveillance, and for any other application that requires more magnification than a pair of binoculars, typically on the order of 20× to 60×.