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  • ...n, Bird-Jones Reflector, Jones-Bird), is a derivative of the [[Newtonian]] telescope design. ...|parabolic]] curvature, and a flat, angled secondary mirror. A Bird-Jones telescope uses a primary mirror with a [[spherical mirror|spherical]] curvature. The
    6 KB (838 words) - 05:00, 18 January 2022
  • If a telescope is not designed for imaging, there is a fair chance that any attempt to con To understand why, let's first look at the design of a Newtonian reflector.
    6 KB (994 words) - 18:32, 14 February 2019
  • *[[Telescope Basics]] *[[History of the Telescope]]
    2 KB (176 words) - 09:58, 12 June 2019
  • ...your eye as you peer into the eyepiece. In contrast, a given eyepiece and telescope combination will also have a ''true'' field of view, which describes how mu ...he Pleiades (Messier 45) into the eyepiece at once, then your eyepiece and telescope combination is giving you a true field of view of about 1.6 degrees, even i
    8 KB (1,285 words) - 22:07, 17 May 2019
  • ...lescope is said to be. Phrases like "fast scope" or "long focal ratio" or "telescope speed" all refer back to its focal ratio number. ...ibing the various aberrations that can be present when looking through the telescope.
    7 KB (1,162 words) - 17:38, 20 May 2019