The evolution of mounts

Our largest telescope mount with a payload of 500kg/1100lbs

The DDM500 is the biggest standard mount with Direct Drive and ABSOLUTE encoders available worldwide


Over 15 years of experience went into the DDM500.
Ready to work on the highest level of accuracy with heavy duty telescopes. Load capacity is 500kg/1100lbs on a custom build pier.

Characteristic features

To achieve the excellent tracking and pointing performance ASA Direct Drive systems are equipped with high resolution up to 28bit (0.004 arcsec) encoders on each axis.

After modelling the pointing with the ASA software package, the positioning error is usually better than 5 arcsec RMS, the tracking performance is in the range of +/- 0.25 arcsec up to 10min (only guaranteed with ASA telescopes).

The ASA DDM500 is the perfect workhorse for all kinds of research work, including astronomical observation, laser communication and satellite tracking.

Basic equipement

  • ASA control software
  • ASA controller box
  • Counterweights
  • Counterweight shaft
  • Telescope mounting plate
  • Power cord
  • Internal cable pipe
  • Power supply

Optional Accessories

  • Equatorial pier

All ASA Direct Drive Mounts

seeing is believing.