OS Mount


  • up to 300 kg in Eq mode
  • +/- 0.25 arcsec RMS in 1200s
  • typical 5 arcsec RMS after modelling
  • AC Brushless or Direct Drive
  • up to 28 bits (0.004 arcsec)
  • typical 12°/sec. Higher speeds available


Two-arm fork layout, ALT/AZ or equatorial layout5 pre-set tracking speeds (sideral, solar, lunar, “user” and “land mode”)
up to 80cm optical tube telescope (or smaller arrays with a total payload up to more than 300Kgs in equatorial mode)Non sidereal objects tracking capability
Steel – aluminum frame Park and Homing functions
Concrete base/pier interface provided. Custom piers availableSub arcsecond non sidereal objects/satellite tracking capability
Fine tuning settings for latitude and azimuth polar alignment when installed in EQ modeHigh precision, heavy payload capable field derotator at Nasmyth focus
Easy and fast restart after previous session end and/or failureHand pad brightness tuning
Pre-loaded precision oversized ball bearings on both axesSoftware selectable mount movement limits
FEA optimized structure for high stiffnessElectromechanical safety brakes presents
Minimized thermal dilatationAuto sync possible (sync on a bright star near the desired object)
Microprocessor controlled motors on both axesInternal high precision real time clock
Full control from local/remote PC, basic functions from local hand padAutomatic alignment from last position (resume)
Direct Drive or high torque AC brusheless motors on both axesAutomatic alignment from park or home position
Real-time tracking correction and motion metrology on both axesComplete advanced T-Point pointing model functions
Absolute Heidenhain on axis encoders, with a resolution up to 28 bit (0.004 arc/sec)Full TCS management software (Windows) provided
Programmable slewing/point speed, tipically up to 12°/s. Higher speed availableASCOM driver provided
Middle term (20 minutes) tracking precision +/-0,25 arcsec RMSSoftware Bisque The Sky X Pro – T-Point – Camera Add On with license included
Pointing error, typical (before mount modeling): 12 arcminCommunication protocol and SDK provided, for third-party software development
Typical pointing error after mount modelling: less than 10 arcsec Power supply and complete user manual provided
Wide internal object database, expandable and online upgradable

Actual, on sky, pointing precision achieved, after only 27 points sky model: about 5 arcsec RMS

Unguided 1200 sec exposure (M82 starfield) 0,8 arcsec/pixel resolution, enlarged, unprocessed, subframe

Actual on sky tacking precision achieved, over a 20 minutes (1200 sec) time: less than +/-0,25 arcsec RMS