Multi-Reducer 0.85X-M (Medium)

Balanced Performance for FCT-65D and FC-50 Systems
The Multi Reducer 0.85×-M brings Takahashi’s renowned optical precision to the mid-range fluorite class. Designed for the FCT-65D and the discontinued FC-50, this reducer shortens the focal length to 340 mm, achieving a bright, flat, and sharply corrected field across a 44 mm image circle. Aberrations are minimized for professional-grade astrophotography results.

Positioned between the FU Reducer 0.65× and the FC/FS Multi Flattener 1.04×, the 0.85×-M gives imagers flexible options to tailor focal length and field of view for any celestial target.

Key Specifications

• Optical Design: 3 groups, 4 elements

• Compatible Models: FCT-65D / FC-50 (discontinued)

• Reduction Factor: 0.85×

• Effective Focal Lengths:
  • FCT-65D — 340 mm (f/5.2)
  • FC-50 — 340 mm (f/6.8)

• Image Circle: φ44 mm (full-frame compatible)

• Telescope-Side Thread: M55.9 × 0.75

• Camera-Side Thread: M52 × 0.75

• Dimensions (Ø × L): 60 mm × 54.7 mm

• Weight: ~0.2 kg

• Includes dedicated CA ring for FCT-65D and FC-50