OK, so you've put your hands on a decent starter telescope. We're not talking about one of the cheap 50 mm aperture "department store" scopes, but a good quality 4 to 6-inch aperture scope. You've ...

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 ...

Chief boast for the Leica Televid HD spotting scope is not just best-in-class performance, but, according to the German brand, ‘the world’s highest image brightness’. A bold claim indeed. Available ...