The magnification (or power) you will see through a given optical system depends on the telescope and the eyepiece. The simple formula is: Magnification = Focal length of telescope ÷ focal length of ...
Mark will be taking phone questions on the last Thursday of every month. Listen to The Morning Mix at 9.30 am on BBC Radio Norfolk. A: Short tube refractors have limited benefits. They are better ...
From magnification to light-gathering, here’s how to make the decision between buying a telescope or a monocular for stargazing and astronomy. When you purchase through links on our site, we may earn ...
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