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• Main Topic Index
  **[[Eye Relief]]
  2 KB (176 words) - 09:58, 12 June 2019
• Exit Pupil
  ...as the size of the "beam" of light that leaves the eyepiece and enters the eye. The larger the exit pupil, the brighter the view will be. The smaller the ...size, it means not all light from the telescope is entering the observer's eye, which reduces its effective aperture.
  8 KB (1,409 words) - 13:10, 4 February 2020
• Barlow
  ===Effect on Eye Relief=== ...where you would want to use a Barlow, so adding a Barlow may increase eye relief too much.
  6 KB (1,062 words) - 21:57, 20 May 2019