Product 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

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

Customer Reviews

Works well with a few issues
I have enjoyed this lens especially for astrophotography. The main issue I had was I could not focus with this lens installed unless it was put in the right order. I found I had to place it as close to the camera as possible which meant I had to rearrange how my camera and assembly was arranged.