Losmandy G11GT-LT Equatorial GoTo Mount (Head Only)

Losmandy G11GT-LT Equatorial GoTo Mount (Head Only)

Losmandy G11GT-LT Equatorial GoTo Mount (Head Only)

Losmandy G11GT-LT Equatorial GoTo Mount (Head Only)

Losmandy G11GT-LT Equatorial GoTo Mount (Head Only)

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Product Highlights

  • Motorized Computer-Controlled EQ Mount
  • 75-Pound Total Payload Capacity
  • Precision Dual-Axis Servo Motors
  • Gemini 2 GoTo Hand Controller
  • 40,000+ Object Database
  • Multi-Star Assisted Alignment
  • Permanent PEC, DEC Backlash Compensation
  • Multiple Slew, Tracking, Guiding Rates
  • Dual Losmandy/Vixen Dovetail Saddle
  • Mount Only - Tripod Required for Use
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  • 1Description

Ideal for long-exposure astrophotography and imaging, Losmandy's G11GT-LT Equatorial GoTo Mount provides users with a powerful platform built to support and move larger optical tube assemblies (OTAs) and gear with precision. With a total payload capacity of 75 pounds, excluding counterweights, and a unique 360° rotating declination axis, the G11GT can precisely track the more than 40,000 objects in its database for extended periods of time without vibration and the need for the time-consuming "meridian flip" that is common with many equatorial mounts.

All hardware is made of stainless steel to handle the weight as well as resist wear over years of use, while a dual dovetail saddle will accept the common Vixen-style plates and the larger Losmandy D-style plates. Its dual axis DC servo motors are smoother and more precise than the more common stepper-type motors and are reversible for use in the Northern and Southern hemispheres. Losmandy is offering this version of the G11GT without a tripod for those users who already have a reliable support system such as a heavy-duty tripod or pier.

The brains of the G11GT system is Losmandy's Gemini 2 computer hand controller. Equipped with a 40,000+ object database and updatable via the Internet, it sports a full-color display, an intuitive user interface, and an Ethernet 10/100 port for remote PC control. It features Periodic Error Correction (PEC) and Declination-axis backlash correction to improve tracking accuracy and precision, with smooth tracking over long periods of time. Alignment assistance is available by selecting at least two bright stars, with the option of aligning to more stars for improved GoTo and tracking accuracy as desired. Multiple guide, slew, and tracking rates allow it to be easily aligned and manually controlled, and to accurately track near and deep-sky objects. A non-volatile memory and real-time clock preserve settings, including the backlash correction and PEC, when the system is turned off and power disconnected.

  • Machined aluminum and stainless steel
  • Scratch-resistant and reflection-limiting black anodized finish
  • All stainless steel hardware resists wear
  • 75-pound payload capacity to handle large OTAs and accessories
  • Altitude adjustment range: 12-70° with locking tangent arm
  • Laser engraved latitude scale in 2° increments
  • Single knob azimuth control with ±10° travel
  • Dual X-Y axis bulls-eye bubble levels
  • Dual dovetail saddle accepts large Losmandy D-style or standard Vixen-style plates
  • Removable 1.25" diameter stainless steel counterweight shaft with 21-pound counterweight
  • Tiltable control panel for easy access
  • Disassembles into two parts for easier transport - RA module weighs 44 pounds, DEC module weighs 18 pounds for a total weight of 62 pounds
  • Optional Northern Hemisphere polar alignment scope
  • 12-18 VDC, 500mA power requirement
  • Mount head only, tripod or pier required for proper use
Motors and Gears
  • Dual-axis DC servo motors
  • ±0.5 arcsec resolution
  • Reversible motors for use in Northern and Southern hemispheres
  • Stainless steel hardware
  • Variable-slip clutches for manual use
Right Ascension axis:
  • Brass worm wheel
  • Worm gear: 6.75" diameter, 270 tooth, 7075 aluminum
  • 5.062" diameter needle thrust bearings, 3.5" sealed ball bearings, 3.1" sealed worm gear ball bearings
Declination axis:
  • 360° DEC axis rotation allows for continuous tracking through the meridian with requiring a time-consuming "meridian flip"
  • One 3.750" diameter needle thrust bearing, one 2" needle thrust bearing, two 1.5" needle bearings
  • 5.625" diameter, 360 tooth, 7075 aluminum worm gear
  • Dual supported ball bearings, brass worm wheel
  • 1.25" stainless steel shaft


Gemini 2 GoTo Hand Controller
  • Full-color graphic touch screen clearly displays all functions
  • Over 40,000 object database
  • Multi-star alignment assistance; requires at least two stars for initial alignment with option for more stars to improve alignment, GoTo, and tracking precision
  • Tracking rates: Sidereal, Solar, Lunar, King's
  • Periodic Error Correction (PEC) improves tracking precision over time
  • Declination Backlash Compensation allows users to program out intrinsic play between gears for smoother and more precise tracking
  • Northern and Southern hemisphere modes
  • Auto-guider port
  • Control panel dimmer
  • Non-volatile memory and real-time clock preserves settings when turned off and power disconnected
  • Ethernet 10/100 with full IP function permits operation from anywhere using a browser, ASCOM, or app over the web or serial port
  • Supported languages: English, German, French, and Spanish
  • Firmware upgrade via internet
  • Dual 12-18 VDC input/output (3.0A) for accessories
  • Database:
  • Solar system: Planets, sun, moon
  • Bright Star List (BSL)
  • Named constellations and stars
  • IC catalog
  • Lynds' Catalog of Bright Nebulae
  • Lynds' Catalog of Dark Nebulae
  • Messier catalog
  • NGC catalog
  • Strasbourg-ESO Catalogue of Galactic Planetary Nebulae
  • Smithsonian Astrophysical Observatory Star Catalog
  • Sharpless catalog 2
  • Southern constellations and stars
  • Washington Double Star Catalog
  • User-defined
UPC: 851868007751
In the Box
Losmandy G11GT-LT Equatorial GoTo Mount (Head Only)
  • Gemini 2 Hand Controller
  • Counterweight Shaft
  • 21-lb Counterweight for GM-8, G-9, G-11 and Titan Mounts
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description
    Mount Type Motorized German equatorial
    Load Capacity 75.0 lb / 34.0 kg
    Motor Dual-axis servo motor
    ±0.5 arcsec resolution
    Counterweight 1 x 21.0 lb / 9.5 kg
    Mount Dual Losmandy and Vixen-style dovetail saddle
    GoTo Capability Gemini 2 computer hand controller
    Altitude / Latitude Adjustment Altitude: 12 - 70°
    Latitude: 2° incremental scale
    Polar Axis Scope Optional
    Includes Tripod/Pier No
    Power Source 12 VDC, 500 mA power supply
    Weight Right Ascension module: 44.0 lb / 20.0 kg
    Declination module: 18.0 lb / 8.2 kg
    Total: 62.0 lb / 28.1 kg
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