Telescope Collimation
Introduction Imagine taking your partner on a date to your favourite stargazing site and pointing it at the sky, only to find out the star… Read More »Telescope Collimation
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Aperture, focal length and focal ratio
Aperture One of the essential features of a telescope is its aperture. Depending on the type of telescope, the aperture can be either a lens… Read More »Aperture, focal length and focal ratio