Material is 304 Stainless Steel with bronze Insert. Custom four vane knob with non-marring brass tip.
PlaneWave Instruments is proud to introduce the Ascension 200 and the Ascension 200HR German Equatorial Mounts. Both mounts are designed to give peerless performance with up to 200 pounds of payload. Both use 360-tooth, 12.1"-diameter RA and DEC gears, have built-in homing sensors on each axis, and are supplied with permanent periodic error correction and a hand pad.The Ascension 200 and 200HR are excellent mounts for both permanent observatories and portable applications. Modularity makes the mount easily transportable for field work, breaking down into three components. The heaviest component is 85 pounds. The PlaneWave Instruments Ascension 200 and 200HR mounts are beautifully machined and finished, featuring powder-coated aluminum with stainless steel complements. Included: * EQ Head * Sidereal Tech Control System * Control Software and Driver * Planewave 7.65 inch Saddle - or - Los Mandy 3 inch Saddle * 1 40lb counter-weight * Counter-weight Shaft * Shipping Crate FEATURES Type: Observatory class German Equatorial Mount Weight: 175 pounds (84 kg) - Base 44 lbs, RA 46 lbs, Dec 85 lbs, CW shaft 17lbs Max. Load Capacity: 200 lbs (91 Kg) Latitude Range: 0 to 90 degrees, Northern and Southern hemispheres Tracking and Slewing Range: 15 degrees past meridian, both sides of pier Finish: Powder-coated aluminum with stainless steel accents Wiring Channels: Equipment cables wired through mount RA and DEC Axes RA Gear: 12.1" diameter, 360 tooth, aluminum worm wheel DEC Gear: 12.1" diameter, 360 tooth, aluminum worm wheel RA Axis: 3.0" stainless steel shaft with a 2.0" through-hole DEC Axis: 3.0" stainless steel shaft with a 2.0" through-hole Motors: Pittman 9000 Series LoCog 12VDC motors Motor Encoders: US Digital 500 CPR (2000 ticks in quadrature) Motor Speed Reduction: 5.9:1 in gear head, 2:1 belt reduction, 360:1 worm reduction High-resolution On-axis Encoders (200HR only): 10"-diameter Renishaw high resolution encoders fully integrated into each axis, with approximately 14 million ticks per rotation (0.07 arc seconds per tick) Control System Control Electronics: Sidereal Technology dual axis telescope control Power Requirement: 12 to 24 VDC, 500mA User Interface: Handpad and ASCOM-compatible SiTech control software for PC control applications Modeling Software: PointXP telescope modeling software is fully integrated into the SiTech PC-based control software Home Position: Home position sensors are included. The mount finds the correct home direction when power is lost. PPEC: Permanent Periodic Error Correction on the RA axis. Slew Rate: 5 degrees per second maximum, both axes