Takahashi FC-35 Reducer .66X for FC / FS Series 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.              

This reducer is compatible with the following FC and FS Series telescopes: FC-100, FS-102, FC-125, FS-128 and FS-152. The FC-35 produces a 10% reduction in the focal length and a 1/3^rd improvement to the RMS-Spot when compared to previous models.

The FC-35 has been designed for the digital imaging age. It is now available for most of Takahashi’s FC and FS refractors. All reducers are NOT supplied with a dedicated CA ring.

FC-35 0.66x Reducer Specifications

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

** Supplied with each FC-35      *Metal back as measured from the flat rearmost shoulder of the FC-35