About this product
Part Number: B5536FTF2
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 including 1 fluorite in 5 groups
- Coating: Fully multi-coated
- Physical length: 200mm
- Tube diameter: 80mm
- Weight: 1.0kg
- Filter: 58mm (front hood) & 52mm ( with part #7000)
- Parts included: 2555, FTF-BORGIII, FTFM57 & 7880
55mm Flourite Objective
- Focal length: 250mm (fluorite)
- Native F-ratio f/4.5
- Length: 95mm
- Weight: 205g
- Interface (rear): M57/P0.75
- Interface (front): 58mm filter thread in front of hood
- 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
What's in the box
- 2555 - 55FL Flourite Objective
- 7880 - 0.8x Quadruplet Reducer
- FTF-BORGIII - M77.6 FTF Adapter
- FTFM57 - 2" Feather Touch Focuser
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