The Celestron f/6.3 Reducer/Corrector lens accessory works with all Celestron C5, C8, C9.25, C11, and C14 SCT telescopes. This accessory makes it possible to have a dual focal ratio instrument, without sacrificing image quality. The Celestron reducer/corrector is f/6.3 for C5, C8, C9.25, and C11 telescopes, and f/7 for the C14 telescope.

The Celestron f/6.3 focal reducer is not compatible with either the Celestron HD and the Meade ACF scopes and OTA. The Celestron reducer/corrector offers wide fields of view with any Schmidt-Cassegrain telescope. Used for astrophotography, it reduces exposure time by a factor of 3. The Celestron focal reducer uses fully multi-coated optics for the best image quality and light transmission. 

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