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With over 272% of the light gathering power of an 8" scope, this unique system makes it possible to offer a Maksutov-Cassegrain-like design in a big but manageable package. Consisting of Pyrex® primary and secondary spherical mirrors, Vixen's improvement of Maksutov's design is the incorporation of a 2-element corrector lens in front of the secondary mirror. This system tidily corrects spherical aberration and field curvature. It also eliminates the need for a big, expensive and heavy front corrector plate found in conventional Maksutov designs. In addition, the resulting open tube design excludes the possibility of dew condensing on a full-aperture corrector.

Focusing is via primary mirror movement and optical collimation is accomplished by secondary mirror adjustments, just like on the smaller Schmidt-Cassegrains telescopes many amateurs are accustomed to.

VMC330L with 2” eyepiece adapter, dual T-thread flip-mirror with dual 1¼” eyepiece adapters, 7x50mm finder and carry handle. Optional tube rings (#5625) and dovetail bar available.


  • Optical Design: Catadioptric Cassegrain
  • Aperture: 330mm (13")
  • Focal Length: 4320mm
  • Focal Ratio: f/13.1
  • Field Corrector: 2-element corrector
  • Tube Length: 935mm (36.8")
  • Tube Diameter: 389mm (15.3")
  • Tube Weight: 20kg (44.1 lbs)