Vixen VC200L Optical Tube (presentation article)

Coma aberration, spherical aberration, curvature of field are all corrected at a high degree with the high-precision 6th order aspherical primary mirror, originally developed by Vixen, and three-element field correction lens.
A ring fixing metal for the objective primary mirror that reduces flare and anti-reflection fiber black coating that helps obtain high-contrast images are employed.
A powerful model for astrophotography since it can obtain a very clear image to the edge of a wide field of view.
The past winners of the photo contests by an astronomical magazines include VISAC users. This model has obtained some notable results.

Objective Effective Diameter: 200mm
Coating: Multi-coating (6th order aspherical)
Focal Distance: 1,800mm
Aperture Ratio: f/9
Resolution: 0.58 Seconds
Limiting Magnitude: 13.3
Light Gathering Power: 816x
Size: Length 620mm, Outer Diameter 232mm
Weight: 6.9kg (Body 6.0kg)
Finderscope: Dark Field of View 7x50mm (Actual Field of View 7 deg.)
Part Attachment Size: Screw in …60mm, 42mm T ring screw
Insert …50.8mm, 31.7mm (Flip mirror attached )
Plate, rings, etc :Plate specification, metal carrying handle
Photography: Enlarged, prime focus, compact digital camera (collimate) photography possible 

Information:
Instrument used as a demonstration model.