High quality 50mm Achromatic f/5 Guide Scope for C-threaded Cameras.

Includes a Borg Helical focuser for precise dependable focusing. 

Specification

• Aperture: 50mm
• Focal length: 250mm
• F-ratio: 5.0
• Lens configuration: 2 elements in 2 groups
• Coating: Fully coated
• Physical length: 250mm
• Tube diameter: 60mm
• Weight: 350g
• Filter: 52mm (front hood)
• Parts included: 2050, 2 x 7604, 7603, 7522, 7315 & T/C

50mm Achromatic Objective

• Focal length: 250mm
• F-ratio f/5
• Length: 52mm
• Weight: 100g
• Interface (rear): M57/P0.75
• Interface (front): 52mm filter thread in front of hood

Precision helical focuser

• Length: 50-60mm (45-55mm Optical Path)
• Moving Distance: 10mm
• Weight: 80g
• OD: 44mm
• ID: 27mm
• Connections: The objective side: 36.4P1 male eyepiece side: 31.7 sleeve M42P0.75 male

There are currently no specifications available for this product.

Borg 50mm Achromatic f/5 Guide Scope Set (Helical Focuser) for C-threaded Cameras Questions & Answers

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