Vixen VMC200L- 8" Modified Cassegrain OTA

Vixen VMC200L- 8" Modified Cassegrain OTA
Item # VX-58291
2 Questions(s)

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  • The Vixen VMC200L optical tube assembly corrects light twice on the optical path, resulting in a high level of optical performance.
  • Optical correction is placed before the secondary. With no corrector plate, dew problems are almost non-existent.
  • The Vixen VMC200L rack and pinion focusing is placed behind primary mirror, resulting in zero image shift.
  • This unique modified Cassegrain is very portable, and even includes a built-in handle.
  • This Vixen VMC200L Optical Tube Assembly does not come with any accessories except a SXD-style mounting rail.


Vixen VMC200L Catadioptric Telescope

The Vixen VMC200L is a unique catadioptric optical system. It incorporates a primary mirror and a meniscus corrector just before a secondary mirror. By doing so, light is corrected twice on the optical path. The end result is that spherical aberration and field curvature are corrected to a high degree of optical performance. The Vixen VMC200L’s primary mirror is f/2.5; the compound optical system is f/9.75. This makes the system much more compact and portable than its competition. With the optical correction placed before the secondary mirror, the VMC200L avoids the necessity of having a corrector plate and all the dewing problems associated with a closed optical tube.

An additional key feature is the rack and pinion focusing that is placed behind the Vixen VMC200L’s primary mirror. The use of this focusing system eliminates the image shift associated with most other SCT systems. This is especially important when using high power magnification or astro-photography. When focusing, the image is stable and easy to adjust.

A Few Words On the Vixen VMC200L Catadioptric Telescope

"Optically, there’s nothing to complain about. I saw no edge-of-field problems at all and images were crisp and well defined through the eyepiece. The f/9.75 focal ratio is noticeably faster than the typical Maksutov design and, of course, that translates into a wider true field of view with any given eyepiece. Reaching focus is easy, as there is a nice, sharp “sweet spot,” and there is never any doubt when you’ve hit it. I felt this was important, given that the rack and pinion focuser is not currently available with a dual speed option.

Another thing I noticed was that the Vixen attracts attention. At the Star-B-Q event, attendees stopped by frequently and asked questions about it. They were very interested in the scope and very impressed after viewing through it. The large, red Vixen logo prominently displayed on the OTA gives the scope an air of superiority, and the build quality and performance lives up to its looks. The glossy white finish is durable and nice to look at, and the scope is solid throughout. The flip mirror is, in my opinion, something that could be improved on, but as it is a removable accessory, it’s not really an issue. Overall, this is just a really nice, well performing telescope, and a very unique one at that. Lightweight, portable, 8 inches of aperture, fast cool down, zero image shift, and reasonably priced – I guess it may be possible to have your cake and eat it too after all!"
-- Erik Wilcox "Astronomy Technology Today"

Vixen VMC200L Catadioptric Telescope Features

  • Outstanding Theoretical Resolution (Dawes) of 0.63" (16mm) and Theoretical Minimum Magnification of 13.3.
  • Premium design for high magnification astrophotography applications.
  • Primary mirror is f/2.5 with a compound optical system resulting in a focal ratio of f/9.75.
  • More compact and portable the competing models.
  • Faster focal ratio for a wide, true field of view.
Vixen Product Number: VX-58291
Additional Information

Additional Information

SKU VX-58291
Manufacturer Vixen
Telescope Series Vixen VMC
Optical Design Modified Cassegrain
Mount Type None - Optical Tube Only
Warranty 5 Year Warranty
Telescope Aperture 8"
Telescope Focal Length 1950mm
Telescope Focal Ratio f/9.75
Limiting Stellar Magnitude 13.3
Optical Coatings Fully Multi-Coated
Dew Shield Included? No, Sold Separately
Optical Tube Outer Diameter 232mm
Length of Optical Tube 21.1"
Optical Tube Weight 13 lbs.
Tube Color or Finish Gloss White
Eyepiece(s) Included None
Finder Included None
Alignment Procedure N/A
Objects in Database N/A
Power Adapter Included None - Does Not Require Power
Counterweights Included N/A
Mount Weight N/A
Tripod Type Included None, Sold Separately
Total Telescope Weight N/A
Included Items

Included Items

  • Vixen VMC200L Modified Cassegrain OTA
  • Caps
  • SXD-Style Mounting Rail
Questions & Answers

Product Questions

Will this OTA's mounting rail fit onto mounts that accept vixen or losmandy style dovetails?
How are the telescope focal length (1950 mm) and focal ratio (9.75) defined? Focal length is the distance from the focus to what? Focal ratio is the ratio of what to what?
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