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Alstar f/6.3 Reducer Corrector for C Series Telescopes

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$87.99

$ 38 .99 $38.99

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About this item

  • Converts f/10 optical system to faster f/6.3 for a significantly wider field of view
  • Reducer shortens the effective focal length of Schmidt Cassegrain telescope optical system by 37 percent
  • This combination focal reducer and field corrector lens accessory works with all Celestron 5 inch; 6 inch; 8 inch; 9 1/4 inch; 11 inch and 14 inch Schmidt Cassegrain telescopes
  • Four element; fully multi coated optical design with 41 mm clear aperture
  • This clever accessory makes it possible to have a dual focal ratio instrument; without sacrificing image quality


Product Description

  • This combination focal reducer and field corrector lens accessory works with all Celestron 5", 6", 8", 9 1/4", 11" and 14" Schmidt-Cassegrain telescopes.
  • This clever accessory makes it possible to have a dual focal ratio instrument, without sacrificing image quality. The Reducer/Corrector is f/6.3 for C5, C6, C8, C9¼ and C11 telescopes and f/7 for the C14 telescope.
  • If offers wide fields of view with any Schmidt-Cassegrain telescope. Used for astrophotography, it reduces exposure time by a factor of 3.

Advantages in a nutshell

  • Converts f/10 optical system to faster f/6.3 for a significantly wider field of view.
  • Reducer shortens the effective focal length of Schmidt-Cassegrain telescope optical system by 37%.
  • Four-element, fully multi-coated optical design with 41mm clear aperture.