Borg 107FL F6 Astrograph Set (FTF-M57 Focuser)

Borg 107FL F6 Astrograph Set (FTF-M57 Focuser)

Due to high demand and global product shortages due to the pandemic, please call for availability.

107FL CR (Carbon Fiber Tube + Rack & Pinion Focuser ) Set [6207]
including 2107, 7803, FTF-BORGII, FTF-M57(7901 version), 7352, 7108 & 2 x 7085. The back end of FTF-M57 is 7901. A set includes a pair of mounting rings.

The Borg line of products consists of a flexible and uniquely modular series of high quality Japanese-made refractors.

Price does not include shipping and brokerage, which will be confirmed before actual payment is taken.


  • Premium fluorite optics produced by Canon Optron (Japan)
  • Airline portable


  • Aperture: 107mm (4.21") Fluorite
  • Focal Length: 650mm (25.59")
  • Focal Ratio: f/6
  • Lens Configuration: 4 elements in 3 groups
  • Coating: Fully multi-coated
  • Physical Length: 526mm (20.7")
  • Weight: 2.9kg (6.4lbs) OTA only
  • Filter: 82mm (front cap)