76D focal reducer (FC-76 / FC-100)

The classical focal reducer of Takahashi FC-76D and FC-100D refractors

The 76D RD reducer is dedicated to Takahashi FC refractors: FC-76DC/FC-76DS, FC-100DCU/FC-100DF and FC-100DZ. It is particularly suitable for telescopes equipped with a small-format focusing system similar to that of the FS-60CB.

The mechanical output of the reducer is a M52x0.75 male thread. The mounting of a DSLR is direct, via a brand specific wide field T-ring for FS-60. The classic 56.2 mm mechanical backfocus allows alternative mounting of CMOS and CCD cameras, with or without a filter wheel.


Takahashi 76D RD focal reducer

Characteristic Takahashi 76D RD focal reducer
Item number TKA18580
Image circle diameter 30 mm/36 mm
Input mechanical interface M56x0.75 thread, female
Output mechanical interface M52x0.75 thread, male
Metal back distance 56.2 mm
Length 48 mm
Weight 190 g

Diagram of threads and focal point position of the Takahashi 76D RD focal reducer