The new Evolux ED series is characterized by its new design, remarkable mechanical improvements and unmatched compactness, without however renouncing the optical qualities typical of the ED Evostar apochromatic refractors from which this new series is inspired.

The new Evolux ED series is characterized by its new design, remarkable mechanical improvements and unmatched compactness, without however renouncing the optical qualities typical of the ED Evostar apochromatic refractors from which this new series is inspired.

Designed for attaching a Nikon DSLR camera to any of the Sky-Watcher 0.85x Focal Reducer/Correctors.
M48 rings are used for larger format imaging. These are different than the standard T-Thread and are not suitable for use on our Collapsible Dobsonian line. M48 rings are to be used on the Esprit and ProED series when using the dedicated field correctors. 

Designed for attaching a Canon DSLR camera to any of the Sky-Watcher 0.85x Focal Reducer/Correctors.
M48 rings are used for larger format imaging. These are different than the standard T-Thread and are not suitable for use on our Collapsible Dobsonian line. M48 rings are to be used on the Esprit and ProED series when using the dedicated field correctors. 

0.85x Focal Reducer/Corrector for Sky-Watcher PRO 80 ED APO is designed for serious Astro-Imagers. Optimized for the Sky-Watcher PRO 80 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. Features:

• 55mm back focus
• M48 threads (not standard T-thread)
• Drops ProED 80 from f/7.5 to f/6.3

Focal Reducer / corrector Evostar 0.85X ED72.

Requires M48 ring.