英和和英

出典:『Wikipedia』 (2011/01/04 02:25 UTC 版)

英語による解説

引用

A Copyscope is a home-made refracting telescope in which the objective lens comes from a photocopy machine. The lenses usually come from defective or very old photocopiers, as this means that the objective can be acquired for free or for very little money. They are usually small aperture lenses, ranging from 50mm to 60mm, and are also of short focal length, making good use as a portable, wide-field telescope, but unsuitable for higher magnifications.