GM-8 Equatorial Mount w/Dual-Axis Drive

Specifications

R.A./Dec. Axis

• All machined aluminum and stainless steel, black anodized.
• All stainless steel hardware.
• 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 tooth.
• Dual supported, ball bearing housed stainless steel worm-heat treated and ground.
• Variable slip clutch, both axes. One knob design.
• 1.250” diameter stainless steel shafts.
• Fully locking, unique tangent arm design altitude adjustment, 0-64 degrees, large knob for easy alignment.
• Laser engraved latitude scale in 2 degree increments.
• Single knob azimuth control, bi-directional +/- 8.5 degree.
• 3.500" diameter laser engraved setting circles 6 minute R.A. / 2 degrees DEC. R.A. circle engraved for Northern and Southern Hemisphere.
• Porter slip ring design.
• 160 oz/in stepper motor, 1.0 arc sec. step.
• Spit Dovetail saddle-plate design. Accepts "D" series dovetail plates. Dovetail plate drops in and locks allowing for interchaning of any tube assembly, reducing the need for DEC weights.
• Removable stainless steel weight shaft w/safety knob.
• 7 lb counterweight.
• 11 lb and 21 lb extra counterweights available.
• Through the axis polar scope, works in Northern and Southern Hemisphere. Polar scope optional.
• Instrument weight capacity 30 lbs.
• Equatorial head weight 21 lbs.

Tripod

• All machined aluminum, black anodized, powder coated.
• Tripod height, adjustable from 27” - 43”
• Fold-up tripod design for easy transporting.
• Tripod weight 15 lbs.

Dual Axis Electronics

• Diamond push button pattern.
• R.A. and DEC. reversing switches.
• Three guiding rates; 30%, 50% and 2x sidereal rate.
• Three setting rates; 4x, 8x, 16x sidereal rate and super fast 32x HST (high speed transfer).
• Quartz tracking rates: sidereal, solar, lunar, king.
• Periodic Error Correction (PEC).
• Programmable DEC. Backlash Compensation (TVC).
• Control panel dimmer.
• Accepts auto-guider systems.
• Northern and Southern Hemisphere operation.
• 12 volt DC - 500ma power use.
• Tiltable control panel for easy access.
• Small hand control box for comfortable use.