Borg 90FL f/4 Astrograph with Feather Touch Focuser Set

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:	Special shipped 15-20 working days.

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Frequently bought with this product:

Borg Series 80 Mounting Ring (x1)  + £69.00

About this product

Japanese made Borg 90FL f/4 astrograph features a premium quality Fluorite objective from Canon with 80mm tube diameter.

Includes a Starlight Instruments Feather Touch 2" dual speed focuser with 2" of draw tube travel and a compression ring.

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

Specification

• Aperture: 90mm
• Focal length: 360mm
• F-ratio: 4
• Lens configuration: 6 elements in 5 groups
• Coating: Fully multi-coated
• Physical length: 400mm
• Tube diameter: 80mm
• Weight: 1.9kg
• Filter: 82mm (front cap) & 48mm in front of reducer
• Parts included: 2591, 7151, FTF-BORGII, FTF-M57, 7872, 7352 & 2 x 7085
• Notes: Includes a pair of mounting rings.

90mm Fluorite Objective

• Focal length : 500mm
• F-ratio : 5.6
• Weight : 950g
• Length : 145mm

0.72x Reducer

• Four-element reducer
• Back focus distance: 60mm
• Image coverage: Full frame
• Objective side interface: M57 male
• Camera side interface: M57 female

Telescope Field of View Simulator

What's in the box

• 2591 - 90FL Flourite Objective
• 7151 - 80mm Dia. 150mm Tube
• FTF-BORGII - M77.6 FTF Adapter
• FTF2008B-M57 - 2" Feather Touch Focuser
• 7872 - 0.72x Quadruplet Reducer
• 7352 - M57 Rotating Ring DX
• 2x 7085 - Series 80 Mounting Ring

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