Vixen SXP Mount with ED115S Refractor Telescope and STAR BOOK TEN

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Item #VIX349-1

  • Your Price:
  • $6,999.00
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  • ED115S 4.5” f/7.7 refractor on a GoTo equatorial mount
  • High def Super ED glass corrects for chromatic aberration
  • Super sharp with lots of contrast; glass is lead-free
  • ”GoTo” German Equatorial Mount with mini tablet-style controller
  • Perfect lightweight mount for loads up to 35 pounds
  • STAR BOOK TEN controller has huge LED screen with great graphics
  • High precision wheels and worm gears for accurate tracking
  • Built-in 6x20 illuminated polar scope helps with alignment
  • Mount “center of gravity” design lets it act as counterweight
  • Includes HAL130 tripod; legs extend from 32 to 51 inches
  • DC power cable included
Questions? Let our experts help!
  • Description

    The Vixen 25092DS consists of the ED115S, a 4.5” f/7.7 refractor with Super Extra Low Dispersion Glass, and the SXP GoTo equatorial mount with a Star Book Ten controller. This is a great intermediate to advanced level equatorial telescope package with dual-axis drive, computerized GoTo electronics, and a Japanese-made, high quality refractor that is perfect for imaging.

    About the ED115S Refractor Telescope

    The high definition ED lens on Vixen's ED115S Refractor gives excellent optical performance with its Super Extra Low Dispersion (SD) glass. Chromatic aberration is virtually eliminated. The Sky at Night Magazine states: "Vixen's optics were excellent. The scope corrected false colors almost perfectly when in focus...Pointing the scope at the stars showed the optics to be pretty much perfectly corrected”.

    The SD lenses on the Vixen ED115S feature brighter images from the shorter f/7.7 focal ratio to capture crisp, pinpoint star images for your enjoyment. The ED115S Refractor's lenses are made with environmentally friendly technologies, free of hazardous lead that helps to support a cleaner global environment. The astro-photographer will be especially pleased with the 4” diameter and the high contrast images. The SD lenses focus all visible rays of light at nearly the very same position. This ensures that the chromatic aberration is highly corrected over a wide spectrum of light. It is of special note that the g-ray light, which affects image contrast, is well suppressed. The ED115S comes complete with 125mm tube rings and Vixen's Dual Speed Focuser.

    About the Vixen SXP Mount

    Designed for the astrophotographer, the Vixen Sphinx SXP Equatorial Mount builds on leading edge innovations developed through decades of experience designing German Equatorial Mounts. The Vixen SPHINX SXP mount and STAR BOOK TEN hand controller display the best in portable GoTo technology. The Sphinx SXP Mount comes standard with the STAR BOOK TEN. This new generation of hand held controllers features a high definition LCD screen and the technology to show you the sky before your telescope takes you there. The Vixen SXP Mount has a maximum loading weight of 35 lb. for astrophotography and 50 lb. for the visual observer.

    Vixen Sphinx SXP Mount Features

    Motors: The Sphinx SXP Mount features pulse motors designed to react smoothly and accurately. The micro slow motion control assures you of smooth operation.

    R.A and DEC: The R.A. and DEC wheels have 180 teeth. They are high precision machined wheels and worm gears made of brass for the most accurate tracking possible. The R.A. and DEC shafts are comprised of strong carbon steel. The rotational parts have 15 bearings. All this provides smooth tracking and slewing.

    Unique Mount Design: The Vixen Sphinx SXP Mount is designed so that the mount body acts as part of the counterweight system.

    Periodic Error Correction: Data from your input is saved for your next observing session.

    Polar Axis Scope: The Sphinx SXP Mount includes a built-in 6x20 polar axis scope. It features a bubble level, illuminated reticle, and setting accuracy within 3 minutes.

    • Time Graduation Circle: 10 Minute Increments 
    • Date Graduation Circle: 2 Day Increments
    • Meridian Offset Circle: Adjustable between E20 deg and W20 deg in 5 deg increments
    • Northern Hemisphere: Polaris pattern with reticle (Applicable to year 2025)
    • Southern Hemisphere: Octantal 4 stars pattern with reticle

    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 Sphinx SXP mount. The tripod extends from 32" to 51" (81cm to 130cm) and weighs 12 lb.(5.5 kg).

    Supplier SKU


    What's Included

    • Vixen ED115S f/7.7 Refractor
    • Flip Mirror Diagonal
    • 7 x 50 Finder Scope & Bracket
    • Tube Rings
    • Vixen-style Dovetail
    • Carry Handle
    • Two Eyepieces
    • Vixen Sphinx SXP Equatorial Mount
    • Dual-Axis Pulse Motors
    • Built-in 6x20 Illuminated Polar Scope
    • STARBOOK TEN hand controller
    • Starbook Ten cable and strap
    • One 4.2 lb. Counterweight
    • One 8 lb. Counterweight
    • Cigarette Plug Cord
    • HAL130 Tripod

  • Dimensions & Specifications

    Optical Design:

    ED APO Refractor


    115 mm

    Focal Ratio:


    Focal Length:

    890 mm

    Resolving Power:

    1.01 arc seconds

    Limiting Magnitude:


    Light Gathering Power:


    OTA Diameter:

    140 mm

    OTA Weight:

    8 pounds


    Flip Mirror


    7X50 Finder

    Mounting Type:

    Vixen Dovetail

    Mount Type:

    German Equatorial



    Load Capacity:

    35 lb. & counterweights

    RA and DEC Slow Motion:

    Worm and Wheel Gears

    Wheels Number of Teeth:


    RA Slow Motion Axis:

    72mm diameter, brass

    DEC Slow Motion Axis:

    72mm diameter, brass

    Worm Gears:

    9mm, brass

    RA Axis:

    40mm diameter, carbon steel

    DEC Axis:

    40mm diameter, carbon steel

    Altitude Adjustment:

    0° ~ 70 degrees latitude

    Azimuth Adjustment:

    2° per rotation

    Number of Bearings:


    Counterweight Bar:

    20mm diameter


    4.2 lb. and 8 lb.

    Motor Type:

    Pulse with 300pps


    12V DC, DC Adapter Included

    Mount Dimensions:

    13.5 x 14 x 5 inches

    Mount Weight:

    24.25 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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