Borg 55FL f/3.6 Astrograph with Feather Touch Focuser Set

Borg 55FL f/3.6 Astrograph with Feather Touch Focuser Set


Special - Shipped 15-20 working days.

Model:  borg_55fl_f3.6_ftf_set
Part Number:  B5536FTF
Brand:  Borg



  • 2555 - 55FL Flourite Objective
  • 7680 - M57 to M75 Adapter
  • 7026 - 80mm Dia. 25mm Tube
  • 7880 - 0.8x Quadruplet Reducer
  • FTF-BORGII - M77.6 FTF Adapter
  • FTF2008B-M57 - 2" Feather Touch Focuser

Japanese made Borg 55FL f/3.6 astrograph features a premium quality Fluorite objective from Canon and a premium quality Starlight Instruments Feather Touch focuser.

Includes a Starlight Instruments Feather Touch 2" dual speed focuser with 0.8" of draw tube travel and a 57mm accessory thread.

Modular Borg design allows you to reconfigure the scope for visual observing or to disassemble it for ultra portability.

Can be used visually by adding a 2" eyepiece holder available separately (7508 or 7509).


  • Aperture: 55mm
  • Focal length: 200mm
  • F-ratio: 3.6
  • Lens configuration: 6 elements in 5 groups
  • Coating: Fully multi-coated
  • Physical length: 200mm
  • Tube diameter: 80mm
  • Weight: 0.9kg
  • Filter: 58mm (front hood) & 52mm (7000)
  • Parts included: 2555, 7680, 7026, FTF-BORGII, FTF2008B-M57 & 7880

55mm Flourite Objective

  • Focal length: 250mm (fluorite)
  • F-ratio f/4.5
  • Length: 95mm
  • Weight: 205g
  • Interface (rear): M57/P0.75
  • Interface (front): 58mm filter thread in front of hood

0.8x Reducer

  • Four-element reducer
  • Back focus distance: 60mm
  • Objective side interface: M57 P0.75 male
  • Camera side interface: M57 P0.75 female

Telescope Field of View Simulator

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