Focal Reducers

0.85x Focal Reducer/Corrector for Sky-Watcher PRO 120 ED APO is designed for serious Astro-Imagers. Optimized for the Sky-Watcher PRO 120 ED APO, this superb quality accessory effectively reduces the telescope’s focal length by a factor of 0.85x and provides much improved field-edge correction.

This flattener from Takahashi is compatible with FC-76 and FS-78 optical tubes. This can help aid in astrophotography, specifically in deep sky because it reduces the focal ratio. When the dedicated flattener is used it changed the focal ratio to f/7.8 at 594mm when used with the FC-76S or D models. This produces a ø40mm flat field image circle. The dedicated reducer changes the focal length to 417mm and the f-stop to f/5.5. The image circle is ø36mm.

This threads into a C Mount thread found on many items, including many modern video and digital cameras. By using this reducer you can image more of the sky into one photo, this reduces the focal length to 60% of your instruments normal length. You may also need optional #3763 T-C ring to mount this to a telescope.

Vixen Focal Reducer AX103S 0.7X 37228 is an accessory made for the Vixen AX103S APO Max Refractor Telescope. This accessory lens reduces the focal length of your telescope by 0.7x (825mm to 578mm (f/5.6).

Reduces Focal length by 0.62x. A Direct Wide Photo Adapter 60 and T-Ring are needed to mount it to your camera.