The GO–ZERO field derotator has been designed to provide an accurate derotating device for altazimuth mounts.
The control system, motor and electronics, have been designed without compromises, aiming for the best performance, flexibility and connectivity, to satisfy the needs of the 21st century observatory.
The GO–ZEROinterfaces directly with 10Micron DDS mounts and can be used with HPS mounts by means of an optional expanded mount control box.
Technical Data
Weight: 5 kg
Instrument payload capacity: 12.5 kg at 50 cm from the instrument flage
Maximum imbalance: 5 kg at 20 cm from the rotation axis
Optical path length: 50 mm
Internal clearance diameter: 100 mm
Software rotation range: adjustable up to +/− 180°
Worm wheel: 215 teeth, bronze CuSn12
Worm gear: 24mm diameter, tempered alloy steel, grinded and lapped
Motors: A.C. servo brushless
Power supply: 24 VDC directly from 10micron mount
Power consumption: ∼0.5 A while tracking / ∼2Apeak
Maximum rotation speed: Adjustable from 2°/s to 20°/s
Rotator pointing accuracy: < 30”
Operating temperature range: −15°C to+ 35 °C
Storage temperature range: −40°C to + 50 °
No compatible accessory
