how do we magnify the image without changing the lens in telescope?
Thursday, December 2nd, 2010 at
5:42 am
sorry because i ask this question again..in telescope,there are two types of lens.right?there are objective lens and eyepiece len.but how to magnify the image without changing these lens?


US $.01



An electronic photomultipler.
you need to change the distance between the lenses.