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, c9 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. THE #94175 REDUcER/cORREcTOR LENS IS NOT cOMPATIBLE WITH cELESTRON EDgEHD OPTIcAL SYSTEMS.
UPC NO: 887570937550
SKU: CONSEB00009XVHZ