Losmandy GM811G Equatorial GoTo Mount with LW Tripod

Ideal for long-exposure astrophotography and imaging, Losmandy s GM811G Equatorial GoTo Mount provides users with a highly portable platform built to support and move optical tube assemblies (OTAs) and gear with precision. With a total payload capacity of 50 pounds, excluding counterweights, the mount can precisely track the more than 40,000 objects in its database for extended periods of time with little vibration.

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. This version of the GM811G comes with an adjustable-height tripod that is made of machined aluminum with a black anodized finish that matches the mount head. It has a height range from 27 to 43 inches, and weighs just 15 pounds to be easy to set up while being highly portable.

The brain 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 backlash correction and PEC, when the system is turned off and power disconnected.

Mount

• Machined aluminum and stainless steel
• Scratch-resistant and reflection-limiting black anodized finish
• All stainless steel hardware resists wear
• 50-pound payload capacity
• Altitude adjustment range: 0-68° with locking tangent arm
• Laser-engraved latitude scale in 2° increments
• Single knob azimuth control with ± 8.5° travel
• Dual dovetail saddle accepts large Losmandy D-style or standard Vixen-style plates
• Removable 1.25" diameter stainless steel counterweight shaft with 11-pound counterweight
• Tiltable control panel for easy access
• Optional Northern Hemisphere polar alignment scope
• 12-18 VDC, 500mA power requirement

Motors and Gears

Motor:

• Dual-axis DC servo motors are smoother and more precise than the more common stepper
• Reversible motors for use in Northern and Southern Hemispheres

Gears:

• All machined aluminum and stainless steel to resist wear
• Variable-slip clutches for manual use

Right ascension axis:

• One 3.75" diameter needle thrust bearing
• One 2" diameter needle thrust bearing
• Two 1.5" diameter needle bearings
• 5.625" diameter, 360 tooth, 7075 aluminum worm gear
• 1.25" diameter stainless steel shaft

Declination axis:

• One 2.1" diameter needle thrust bearing
• One 2" diameter needle thrust bearing
• Two 1.5" diameter needle bearings
• 2.812" diameter, 180 tooth, 7075 aluminum worm gear
• 1.25" diameter aluminum shaft

Gemini 2 GoTo Hand Controller

• Full-color graphic touch screen clearly displays all functions
• 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 preserve 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

Tripod

• Maximum payload capacity: Carries up to 100 pounds
• Machined aluminum with scratch-resistant black anodized finish
• Adjustable height from 27 to 43" to accommodate a variety of users and viewing positions
• Independently adjustable leg angle with position locks
• Large locking knobs for leg sections enable the legs to be firmly set in place even when wearing gloves
• Weight: 15 pounds

EAN: 851868007737