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Losmandy GM-8 Equatorial Mount with Tucked-In Motors, LW Tripod, and Gemini 2 Go-To System - GM8G


Losmandy GM8G Equatorial Mount with LW Tripod and Gemini Go-To System

The Losmandy GM8G Equatorial Mount and Tripod with Gemini Go-To Drive and Tucked-In Motors is one of the most precise and finely crafted telescope mounts available today. The Losmandy GM-8 Mount is a beautifully machined mount made of aluminum and stainless steel. This mount provides astrophotographers with a solid platform to mount their smaller-to-mid-size Schmidt Cassegrains and Refractors along with the other instruments that constitute their astrophotography rig.

Losmandy GM-8 Equatorial Mount Highlights:

  • The Losmandy GM-8 Equatorial Mount has a 30-40 lb weight capacity for imaging and a 55 lb weight capacity for visual applications
  • Designed, machined, assembled, and performance-tuned in the USA
  • Laser engraved latitude scales and setting circles
  • Includes OPW one-piece worm block on both axes
  • The Losmandy GM-8 Mount Head weighs 21 lb
  • 0-68º latitude range
  • This GM8G includes Gemini GoTo System
  • This version of the GM8G includes the Losmandy LW Tripod
  • The Tripod itself weighs 15 lb

Losmandy GM-8 Specifications:

  • Servo motor driven Right Ascension and Declination axes
  • 1.250" diameter aluminum shafts
  • All machined aluminum and stainless steel, black anodized
  • All hardware used is stainless steel
  • One 2.100" diameter needle thrust bearing
  • One 2.000" diameter needle thrust bearing
  • Two 1.500" diameter needle bearings
  • 2.812" diameter, 7075 aluminum worm gear, 180 teeth
  • Dual-supported, ball bearing housed brass worm; worm gear is precision ground
  • One piece worm block design
  • Spring Loaded Worms
  • Tucked-in motors
  • Variable slip clutch, both axes with one-knob tension design
  • Fully locking, unique tangent arm design altitude adjustment, 6°- 68°, large knob for easy alignment
  • Laser engraved latitude scale in 2° increments
  • Precision pointing and tracking
  • Single knob azimuth control, bi-directional ± 8.5°
  • 3.50" diameter laser engraved setting circles, 6 minute R.A., / 2° Dec., R.A. circle engraved for Northern and Southern Hemisphere
  • Porter slip ring design
  • DC Servo motors for improved accuracy with higher torque than steppers
  • Dovetail saddle-plate fits both "D" Losmandy and "V" Vixen-style dovetails and allows for the interchanging of any tube assembly; this reduces the need for Dec weights
  • Removable stainless steel weight shaft w/safety knob
  • Includes one 7 lb counterweight
  • 11 lb and 21 lb extra counterweights available as options
  • Through-the-axis Polar Scope capability, works in Northern and Southern Hemisphere; Note: the Polar Scope is optional
  • Verified with most modern astronomical/astroimaging systems including Maxim DL, NINA, SGP, Voyager, TheSkyX, Stellarium, Sky Safari, Cartes DuCiel, APT, BYEOS, Nebulosity, etc.
  • Instrument weight capacity: 30-40 lb. imaging; 55 lb. visual
  • Equatorial head weight: 21 lb

The Losmandy Gemini 2 Go-To System is a servo motor based computerized positioning system for the Losmandy Mounts. Losmandy has updated the Gemini GoTo System to include a newly enhanced CPU and increased memory. Perhaps most impressive is the interactive color touch screen that comes with the Losmandy Gemini 2 Go-To System.

The Gemini 2 Go-To System works with the Losmandy, GM8, G11 and Titan Mounts. This system is incredibly precise and the choice of astro photographers world wide. Precise object tracking is achieved as a result of the servo motor system Losmandy utilizes. The servo motor system runs with a continuous and smooth rotation, for better tracking. Further, the Losmandy system has an elevated level of torque which allows it to produce slewing rates of up to 8° per second with the GM-8 mount, 6° per second with the G-11 and 5° per second with the Titan Mount. The Losmandy Gemini system is a great instrument for use in the field because it can be run as a stand-alone system. With a 42,000+ object database and an illuminated Color LCD touch screen, this mount is a pleasure to use. Powering the unit is simple; all you need is a 3A, 12-18 Volt DC power supply. Check out our list of specifications and features pertaining to the Losmandy Gemini 2 Drive System:

Losmandy Gemini 2 Go-To System Features:

  • Full Color Graphic Touch Screen clearly displays all functions including day, twilight, and night modes
  • Classic four-button pattern for guiding, centering, moving, and slewing on both the touch screen and on a tactile membrane on the rear surface
  • Support for the original four-button controller
  • Can be used on all Losmandy GM8, G-11, & Titan mounts
  • Custom mount support using the Programmable Gear Rate function
  • Built-in polar alignment, periodic error correction, and model building wizards
  • Built-in permanent periodic error correction
  • 0.5 arcsec positional accuracy
  • +/- 8 arcsecond or better uncorrected tracking (often +/- 4 arcsecond or better corrected)
  • DC Servos for improved accuracy, with higher torque than stepper motors
  • Up to 1/2 arcminute GoTo precision
  • All Losmandy equatorial mounts have been hand-tuned at the factory for optimal performance
  • GPS-compatible with optional receiver
  • Stand-alone system: No PC is required for operation
  • English, German, French, & Spanish displays
  • Ethernet 10/100 with full IP function permits operation from anywhere using a browser, ASCOM, or app over the web or serial port
  • Mature reliable drivers for Windows, Mac, Linux including ASCOM and INDI
  • Supports SkyFi, SkyWire, WiFi, and Bluetooth adapters
  • Non-Volatile Memory and Real-Time Clock
  • Over 42,000 objects stored in the database
  • USB ports: Virtual COM to PC, ASCOM or planetarium program
  • Port F: multi-function serial port; for A/D Input or Output
  • Firmware upgrade via internet
  • Unique modular system enables mount upgrades one axis at a time
  • Auto-Guide port (TTL)
  • Dual 12~18 VDC input/output (3.0 A)
  • Tiltable control panel, for easy access during operation

Gemini 2 Celestial Database Includes:

  • 168 BSL
  • 303 Combined_Constellation_Stars
  • 5437 IC
  • 1125 LBN
  • 1787 LDN
  • 110 Messier Objects
  • 8290 NGC (New General Catalog)
  • 1143 PN
  • 17636 SAO (Smithsonian Ap. Obs.)
  • 313 Sh2
  • 223 Southern_Constellation_Stars
  • 3988 WDS

The CPU on the Gemini 2 System uses a mounted PC board as its base. This is a proven setup and is one of the most reliable in the field today. The main board has auto-guider and accessory ports, for full remote control (via the web) of the system from a computer from anywhere in the world. The Gemini 2 uses a Meade LX200 inspired command set. Clock and location information can be updated through a Losmandy GPS accessory that is sold separately.

Losmandy GM-8 LW (Light Weight) Tripod Specifications:

  • All machined aluminum, black anodized
  • Tripod height, adjustable from 27" - 43"
  • Extremely sturdy and rigid when assembled, for superior astrophotography
  • Folding leg design for easy transporting
  • Tripod (only) weight: 15 lb

The Losmandy GM-8 Mount and Tripod with Gemini 2 Go-To Drive is a top-performing astronomical instrument with an updated, modern drive. If you are an astrophotographer looking for a solid mount with a 30 lb capacity, to support your telescope, the Losmandy GM-8 with Gemini 2 Go-To Drive is for you.

You can find instructions on Gemini 2 Screen Calibration here.

Please note that although some images may show otherwise, this Losmandy GM-8 Equatorial Mount comes with a Tucked-In Motor upgrade.