Japanese made Borg 71FL f/5.6 features a premium quality Fluorite objective from Canon with 80mm tube diameter.

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.

Specification

• Aperture: 71mm
• Focal length: 400mm
• F-ratio: 5.6
• Lens configuration: 2 elements in 2 groups
• Coating: Fully multi-coated
• Physical length: 330mm
• Tube diameter: 80mm
• Weight: 1.3kg
• Filter: 72mm (front hood)
• Parts included: 2573, 7151, 7801, 9850 & 7504
• Notes: Borg rack & pinion focuse. 2-inch opening & M57-thread.

71mm Flourite Objective

• Focal length: 400mm
• F-ratio: 5.6
• Weight: 410g
• Length: 170mm

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

Telescope Field of View Simulator

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Borg 71FL f/5.6 Series 80 with Rack & Pinion Focuser OTA Set Questions & Answers

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