Vixen Advanced Polaris-M Mount with VMC110L Catadioptric Telescope

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Item #VIX334-1

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  • $2,290.00
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  • $1,899.00
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  • $391.00 USD18% + FREE Shipping

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  • 4.3” Vixen Modified Cassegrain is just 14.5” long
  • Open tube assembly keeps dew under control
  • f/9.4 focal ratio good compromise between magnification & contrast
  • Built-in slide mirror lets change quickly between eyepiece & camera
  • AP mount includes an RA motor for motorized horizontal movements
  • STAR BOOK ONE controller lets you change speeds and tracking rates
  • Controller features an ST4 autoguider port
  • AL130 Tripod is metal and has adjustable legs
  • Power with Micro USB AC or USB Battery Pack (sold separately)
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  • Description

    The Vixen 39985 consists of a 4.3 inch Modified Cassegrain (VMC) telescope and the Advanced Polaris Equatorial Mount and Tripod. This is a great intermediate level telescope package that can be upgraded with extra components when you’re ready! The AP-M mount comes with an RA motor and Star Book One hand controller, giving you motorized tracking of objects as they move horizontally across the sky. You can also add a Declination motor module whenever you like—the Star Book One is capable of controlling both. And since it is super easy to attach and remove the optical tube assembly, you can add a different style telescope when you want to change it up a bit. In the meantime, enjoy views of hundreds of celestial objects with this quality telescope, and have fun using this very smooth, well made equatorial mount!

    About the VMC110L Telescope

    The Vixen VMC110L is a 110 mm (4.33 inch) aperture modified Cassegrain optical tube assembly with a focal ratio of f/9.4. The compact optical tube is perfect for travel, and has many features found on Vixen's higher end telescopes. The VMC110L produces upright images, and is therefore suitable for viewing the night sky or birds in far off trees. The open tube design eliminates dew problems associated with closed tubes. The VMC110L telescope includes a built-in slide mirror. Install 2 different eyepieces and change views easily. Or, attach your camera to one and an eyepiece to the other and capture images with ease.

    With no corrector plate, the VMC110L telescope features a small corrector lens ahead of the secondary mirror. The curved mirror braces reduce the effect of light diffraction.

    About the Vixen Advanced Polaris M Mount

    The Vixen Advanced Polaris-M is an easy to use German equatorial mount that is designed to be easily transformed into a variety of configurations. This classic equatorial mount includes the RA Motor module, STAR BOOK ONE hand controller and an adjustable tripod.

    The STAR BOOK ONE Controller is a dual axis handheld controller. The 4 buttons on the controller move the mount electrically in the X and Y axis (RA and, if you buy the Dec Motor Module, in DEC). The controller includes a built-in red LED light for illumination to avoid loosing night vision. Versatile tracking options are available; sidereal rate, King Rate, lunar rate, and solar rate. Different tracking speeds are available for time lapse photography. The controller works in both the northern and southern hemispheres. Backlash compensation provides reduced time lag at the point of reverse motion and the controller can be used for auto guiding with an auto guider compatible with SBIG auto guiders. PEC rectifies irregular motion of the tracking gear wheels that affect long exposure astrophotography.

    The Advanced Polaris-M German Equatorial Mount is ideally suited for both beginners and experienced observers who want simple equatorial mount with a easy-to-control right ascension drive. To add dual-axis drive functionality to this mount, we recommend adding the DEC Motor Module, which is sold separately.

    The Vixen Advanced Polaris-M Mount securely supports the VMC110L telescope for comfortable night sky observing. The mount can be quickly moved to your target object in right ascension via the Star Book One controller, or manually in either RA or Declination, and has slow motion controls on both RA and Dec that allow for smooth manual movements once your choice of object is in the field of view. A wide selection of accessories and modules (including a DEC Motor Module) are available to customize the Advanced Polaris mount further. This EQ mount also comes with the Vixen AL130 Tripod and a 2.2 pound counterweight.

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    What's Included

    • Vixen VMC110L Modified Cassegrain Telescope
    • Flip Mirror Diagonal
    • Plossl Eyepiece
    • Red Dot Finder
    • Vixen-style Dovetail
    • Vixen Advanced Polaris-M Equatorial Mount
    • RA Motor Module
    • Starbook One Controller & Cable
    • 2.2 lb. counterweight
    • AL130 Tripod

  • Dimensions & Specifications

    Optical Design:

    Modified Cassegrain


    110 mm

    Focal Ratio:


    Focal Length:

    1035 mm

    Resolving Power:

    1.05 arc seconds

    Limiting Magnitude:


    Light Gathering Power:


    OTA Diameter:

    119 mm

    OTA Length:

    14.5 inches

    OTA Weight:

    4.6 pounds


    Flip Mirror


    Red Dot

    Mounting Type:

    Vixen Dovetail

    Mount Type:

    German Equatorial

    Load Capacity:

    13.2 lb.

    RA and DEC Slow Motion:

    Worm and Wheel Gears

    Number of Teeth:


    RA Axis:

    59mm diameter, aluminum alloy

    Declination Axis:

    59mm diameter, aluminum alloy

    Altitude Adjustment:

    0° ~ 65 degrees latitude

    Azimuth Adjustment:

    1.4° per rotation

    Number of Bearings:


    Counterweight Bar:

    20mm diameter


    2.2 lb.


    RA Motor Module

    RA Motor:

    Pulse motor

    RA Tracking/ Slewing:

    Via Star Book One controller

    Controller Plug:

    D-SUB9-Pin male


    Micro USB or Battery Pack (sold separately)


    AL130, adjustable from 21 to 45.5 inches

    Tripod Weight:

    6.6 pounds

  • Product Guarantee

    We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.

    Manufacturer Warranty

    Default manufacturer warranty.

    Return & Exchange Policy

    At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.

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