Borg 77EDII f/6.6 with Rack & Pinion Focuser OTA Set
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Borg 77EDII f/6.6 with Rack & Pinion Focuser OTA Set

£929.00✓ 2 year warranty

:  

Special - Shipped 15-20 working days.

About this product

Model:  borg_77edII_f6.6_rp_set
Part Number:  6675

Japanese made Borg 77EDII f/6.6 refractor with ED glass element, which significantly reduces chromatic aberration. 

Includes a Borg 2" Rack & Pinion focuser with fine focusing knob for smooth, accurate focusing.

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

Includes a 2" eyepiece holder for visual use.

Specification

  • Aperture: 77mm
  • Focal length: 510mm
  • F-ratio: 6.6
  • Lens configuration: 2 elements in 2 groups
  • Coating: Fully multi-coated
  • Physical length: 420mm
  • Tube diameter: 80mm
  • Weight: 1.6kg
  • Filter: 77mm & 82mm (lens cell)
  • Parts included: 2179, 7803, 7051, 7801, 9850 & 7504
  • Notes BORG rack & pinion focuser. 2-inch opening & M57-thread.

77mm EDII Objective

  • Focal length: 510mm
  • F-ratio: 6.6
  • Weight: 500g
  • Length: 110mm

Borg Rack & Pinion Focuser

  • M68.8/P0.75 male at the objective side
  • M57/P0.75 female at the camera side
  • 760g
  • 79-144mm long (65mm focus travel)
  • 2mm stroke per rotation of 30mm diameter fine focus knob

System Diagram

Telescope Field of View Simulator

What's in the box

  • 2179 - 77EDII Objective
  • 7803 - 80mm Dia. 205mm Tube
  • 7051 - 80mm Dia. 50mm Tube
  • 7801 - M77.6 to M68.6 Adapter
  • 9850 - Rack & Pinion Focuser
  • 7504 - 2" Eyepiece Holder SII

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