Quick View Celestron f6.3 Focal Reducer £159.99
This combination focal reducer and field corrector lens accessory works with all Celestron 5", 8", 9 1/4", 11" and 14" Schmidt-Cassegrain telescopes.
Quick View William Optics Adjustable Flattener 6A III £199.00 £179.00
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.
Quick View APM Triplet APO Reducer £499.00
A reducer, as its name implies, "reduces" the focal length of your telescope by a set factor.
Quick View OVL Field Flattener (with T-ring adaptor) £95.00 £89.00
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.
Quick View Explore Scientific 0.7x Reducer/Corrector 3" £339.00
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.
Quick View STF 2" Achromatic Reducer 0.8x £149.99
STF 2" Reducers can be used with Maksutov-Cassegrain telescopes which feature with focal plane extension not less than 180 mm.