Reducers, Flatteners and Correctors

This combination focal reducer and field corrector lens accessory works with all Celestron 5", 8", 9 1/4", 11" and 14" Schmidt-Cassegrain telescopes. 

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A must-have for serious planetary observers and photographers.

1:1 power flattener for the William Optics ZenithStar 61!

Field flattener optically matched for the ZenithStar 73.

This very elegant 2" reducer/field flattener has been designed to optimize the flat-field imaging performance of William Optics F/6 to F7.5 ratio refactors.

This very elegant 2" reducer/field flattener has been designed to optimize the flat-field imaging performance of William Optics FLT91.

This revolutionary new WO FF68II Adjustable Flattener was made for 6 -7.5 F ratio refractors.

A reducer, as its name implies, "reduces" the focal length of your telescope by a set factor.

Superb quality, non-focal reducing Field Flattener optimised for DSLR imaging on refractor telescopes with focal ratios of between f/5.5 to f6.0.

The Explore Scientific 0.7x Reducer/corrector 3" reduces the effective focal length of a particular telescope by the factor 0.7x (for f/8) and 0.8x (for f/10) respectively.

STF 2" Reducers can be used with Maksutov-Cassegrain telescopes which feature with focal plane extension not less than 180 mm.

In Stock!

In Stock!