Takahashi FC35 Focal reducer 0.66x for FC-100DF and old refractors

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About this product

Takahashi TKA19580 FC35 0.66x Reducer for use with FC100DF and older FS102/FS128/FS152/FC-100 Triplet and FC-125 Triplet Telescopes.

The FC-35 0.66x reducer was designed to be used with the FC-100DF to produce a 485mm focal length at f/4.9 which is a 34% reduction in the focal length. It produces a field flat to within 20 microns over a 35mm full frame. 

Model            Focal Length                        Image Circle         CA Ring**                Metal Back*

FC-100DF     485mm [f/4.9]                      Ø 44mm                TKP19205                78.1mm         

FC-100          526mm [f/5.3]                      Ø 44mm                TKP19205                78.1mm

FS-102          542mm [f/5.3]                      Ø 44mm                TKP19205                78.1mm

FC-125          672mm [f/5.4]                      Ø 44mm                TKA31202                70.3mm        

FS-128          700mm [f/5.5]                      Ø 44mm                TKA31202                70.3mm

FS-152          819mm [5.4]                        Ø 44mm                TKA31202                70.3mm

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