Vixen SXD2 Mount with ED103S Refractor Telescope and STAR BOOK TEN

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Item #VIX342-1

  • Your Price:
  • $5,299.00
  • + FREE Shipping
  • Perfect size telescope for travel and home
  • Classic 4 inch ED APO refractor is made in Japan
  • Great for astrophotography; made with high def ED glass
  • Super sharp results with virtually no false color
  • SXD2 German Equatorial Mount with mini tablet-style controller
  • Medium capacity GoTo mount for loads up to 33 pounds
  • STAR BOOK TEN controller has 5” LED screen with great graphics
  • GoTo over 270,000 celestial objects
  • Pre-installed SX polar scope helps with alignment
  • Includes HAL130 tripod; legs extend from 32 to 51 inches
  • 12 pounds of counterweight & DC power cable included
Questions? Let our experts help!
  • Description

    The Vixen 25081 consists of the ED103S, a 4” f/7.7 refractor with extra low dispersion glass, and the SXD2 GoTo equatorial mount with a Star Book Ten controller. This is a great intermediate to advanced level equatorial telescope package with dual-axis drive and computerized GoTo electronics. Perfect for both astrophotography as well as visual use, you’ll love the tablet-style controller and the beautiful contrast of this Japanese made 103 mm refractor.

    About the ED103S Refractor Telescope

    The high definition ED lens in Vixen's ED103S Refractor Telescope gives excellent optical performance in a short optical tube for easy handling. The extra-low dispersion ED lenses feature bright images from the f/7.7 focal ratio telescope and capture crisp, pinpoint star images for your eye's enjoyment. Vixen's ED glass produces clear and high contrast viewing, virtually free of false color. The design uses environmentally friendly glass technology, free of hazardous lead that helps to support a cleaner global environment. Vixen's proprietary lenses focus the full visible spectrum of visible light to a critical point. The astro-photographer will be especially pleased with the high contrast images through this telescope. The ED103S Refractor comes complete with 90mm tube rings, 7x50 finder scope, flip mirror, and dovetail plate.

    About the Vixen SXD2 Mount

    Vixen has reworked the design and manufacture of its innovative SXD Mount, creating the SXD2 German Equatorial Mount. The SXD2 Mount has a greater loading capacity and is more rigid enabling a more steady platform for astrophotography. The quieter stepping motors ensure you of smooth, quiet slewing with quick response to commands. The Star Book Ten, available previously on the SXP Mount, features an intuitive Star Chart Go-To System on a high definition LCD Screen. Features include night vision screen, hibernate mode, VPEC and PPEC, and optional built in auto guider. Both the RA and DEC Axes are made of sturdy steel with brass wheel gears. This enables the mount to carry loads of up to 50 pounds (including counterweights) for astrophotography.

    Smooth RA and DEC Movement: The inside of the new SXD2 is very different from the previous SX Mounts. Bearings have been added to the shafts of t he RA and DEC axes and the screw gear shafts. The worm screw gears are inspected for strict concentricity and are lapped in the whole-circle for smooth movement.

    Increased Loading Capacity: Both the RA and DEC Axes are made of sturdy steel with brass wheel gears. This enables the mount to carry loads of up to 50 lb. (including counterweights) for the visual observer and 33 lb. for astrophotography.

    STAR BOOK TEN & HAL-130 Tripod Features

    The STAR BOOK TEN is the most advanced astronomical hand controller available and is recommended for anyone interested in exploring the night sky. The innovative STAR BOOK TEN hand controller offers astronomical navigation with a large full-color High Definition LCD screen! The color screen is a detailed star chart that acts as a navigational and GOTO guide for the mount.

    The screen can be displayed with monochromatic red light in order to maximize the accommodation of your eyes to darkness. The operating keys can also be lit in red.

    Hibernate Mode: After selecting to continue the current setup at the initial screen, you can break and restart your automatic slewing and tracking of the mount by just flipping the power switch, if the mount is still in place, without loosening the R.A. and DEC clamp levers.

    Different Tracking Rates: The motion of the moon, the sun, planets and comets have different tracking rates than the stars. The STARBOOK TEN moves the mount at different rates, automatically, dependent upon the target object.

    Artificial Satellite Watching: The STARBOOK TEN has a menu to find and track artificial satellites by entering the orbital elements of the satellites. the ISS and named satellites are pre-registered.

    The HAL130 Tripod provides ample stability and has no wobble points in its design. The HAL130 has a large base to carry the SXD2 mount. The tripod extends from 32" to 51" (81cm to 130cm) and weighs 12 lb.(5.5 kg).

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    What's Included

    • Vixen ED103S ED APO Refractor
    • Flip Mirror Diagonal
    • Finder Scope & Bracket
    • Tube Rings
    • Vixen-style Dovetail
    • SXD2 Equatorial Mount
    • SX Counterweights 3.7kg and 1.9kg
    • STAR BOOK TEN Hand Controller
    • STAR BOOK Cable
    • Cigarette-lighter Plug Cord
    • Strap for STAR BOOK TEN
    • CR2032 Battery for STAR BOOK TEN's built-in clock
    • HAL130 Tripod
    • SXD2 Instruction Manual

  • Dimensions & Specifications

    Optical Design:

    ED APO Refractor


    103 mm

    Focal Ratio:


    Focal Length:

    795 mm

    Resolving Power:

    1.13 arc seconds

    Limiting Magnitude:


    Light Gathering Power:


    OTA Diameter:

    90 mm

    OTA Weight:

    8.1 pounds


    Flip Mirror


    Optical Finder

    Mounting Type:

    Vixen Dovetail

    Mount Type:

    German Equatorial



    Imaging Load Capacity:

    33 lb.

    Visual Load Capacity:

    50 lb. including weights

    RA and DEC Slow Motion:

    Worm and Wheel Gears

    RA Slow Motion Axis:

    180 tooth whole circle movement

    DEC Slow Motion Axis:

    180 tooth whole circle movement

    Altitude Adjustment:

    0° ~ 70 degrees latitude


    4.2 lb. and 8.15 lb.

    Motor Type:



    12V DC 0.4 to 1.7A

    Mount Weight:

    19.3 pounds without counterweights



    Controller Display:

    5” TFT Color LCD WVGA



    Object Database:


    Autoguider Port:

    6 pole, 6 wired modular jack for external unit

    LAN Port:


    Controller to Mount Connector Port:

    D-SUB 9 pin male plug

    Controller Dimensions:

    6.6 x 6 x 1.18 inches

    Controller Weight:

    14.11 ounces


    HAL130, adjustable from 32 to 51 inches

    Tripod Weight:

    12 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.

Ask The Experts

Have questions about an item or need advice on selecting the right astronomy gear? Our team of telescope experts is here to help! Avid amateur astronomers themselves, they've tested products in the field and can provide personalized recommendations.

You can reach our Customer Support line at 1-800-303-5873. We're open 8 a.m. to 8 p.m. Central Time, Monday through Friday and 9 a.m. to 4 p.m. on Saturday.

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