Borg 55FL f/4.5 Basic OTA Set

• Product description
• In the box
• FAQ

:	Special shipped 15-20 working days

Add to Basket

Ask a Question Add To Wishlist Send To Friend

Frequently bought with this product:

Borg Series 60 Mounting Ring (x1)  + £75.00

About this product

Japanese made Borg 55FL f/4.5 features a premium quality Fluorite objective from Canon.

Includes a Borg Helical focuser for precise dependable focusing. 

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).

Specification

• Aperture: 55mm
• Focal length: 250mm
• F-ratio: 4.5
• Lens configuration: 2 elements in 2 groups
• Coating: Fully multi-coated
• Physical length: 230mm
• Tube diameter: 60mm
• Weight: 0.5kg
• Filter: 58mm (front hood)
• Parts included: 2555, 7761, 7602, 7604, 7205 & 7000

55mm Flourite Objective

• Focal length: 250mm (fluorite)
• F-ratio f/4.5
• Length: 95mm
• Weight: 205g
• Interface (rear): M57/P0.75
• Interface (front): 58mm filter thread in front of hood

Precision helical focuser

• Length: 27 to 44mm light path
• Weight: 98g
• OD: 73mm
• ID: 49mm

System Diagram

The diagram below shows the discontinued helical focuser 7758 - this has now been changed to 7761 which has a finer pitch mechanism.

Telescope Field of View Simulator

What's in the box

• 2555 - 55FL Flourite Objective
• 7761 - M57 Helical Focuser DXII
• 7602 - M57/60 S 20mm Extension
• 7604 - M57/60 L 60mm Extension
• 7205 - M57 Drawtube
• 7000 - SLR Camera Mount Adapter

Customer reviews

FAQ

Please fill in the form below to ask a question.

* Your Name:

* Your Email Address:

* Your Question:

*

Please add the two numbers

Ask a QuestionAsk a Question