Reducer/Corrector f/6.3
This combination focal reducer and field corrector lens accessory works
with all Celestron 5", 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, 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.
