Optical tube Vixen VISAC VISAC VC200-L with Dual Speed

Optical Tube Vixen VISAC VC200-L with Dual Speed

The famous VISAC (Vixen's Six-order Aspherical Cassegrain) VC200-Lcatadioptric telescope is an original VIXEN design featuring an aspheric primary mirror with a sixth-order correction, a convex secondary mirror and a triplet of corrector lenses. It is a particular variant of a Maksutov-Cassegrain telescope that does not have a Maksutov corrector lens at the front of the tube but has it integrated just in front of the secondary mirror, thus minimizing the thermalization and light absorption problems of traditional Maksutov-Cassegrain.

The VISAC design achieves a photographic field virtually free of aberrations. As coma, spherical and field curvature aberrations are corrected to perfection, images are rendered with astonishing sharpness and resolving power.

Its fantastic performance in astrophotography and its reasonable price have given it a well-deserved recognition, even comparing its performance with those offered by higher priced telescopes.

Technical Specifications:

Effective lens diameter: 200mm
Treatment: Multi-coated (6th order aspherical)
Focal length: 1,800mm
Focal ratio: F/9
Resolution: 0.58 arcseconds
Limiting magnitude: 13.3
Light gathering power: 816x
Dimensions: length 620mm, outer diameter 232mm
Weight: 6.9kg (body only 6.0kg)
Finder: 7x50mm (7º field of view)
Focusing tube couplings: 60mm and 42mm threads (T-thread)
Output to 2" or 1.25" using the Flip Mirror
Clip, rings, etc.: narrow dovetail type Vixen and metal handle for tube attachment.

* Eyepiece NOT included.

Optical tube Vixen VISAC VC200-L with Dual Speed