Monday, December 12, 2011

Celestron f/6.3 Reducer Corrector for C Series Telescopes

Celestron f63
Celestron f/6.3 Reducer Corrector for C Series Telescopes
by Celestron
4.3 out of 5 stars(3)

Buy new: $211.95 $104.39
6 used & new from $98.00

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Review & Description

This combination focal reducer and field corrector lens accessory works with all Celestron C5, C8, C9¼, C11 and C14 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, 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. Celestron doesn't offer a f/6.3 Schmidt-Cassegrain telescope, because the design is impractical, with a large central obstruction, and resulting loss in contrast. This, added to the inability to utilize longer focal ratios for certain objects, led Celestron to design the four-element, fully multicoated f/6.3 Reducer/Corrector. Results are amazing both visually and photographically.

Product Details

  • Brand: Celestron
  • Model: 94175
  • Dimensions: 2.00" h x 2.00" w x 2.00" l, 1.00 pounds

Features

  • Reducer shortens the effective focal length of Schmidt-Cassegrain telescope optical system by 37%
  • Converts f/10 optical system to faster f/6.3 for a significantly wider field of view
  • Shortens exposure times for astrophotography by 2.5 times
  • Four-element, fully multi-coated optical design with 41mm clear aperture
  • threads into rear cell and works with any brand and size of Schmidt-Cassegrain telescope

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