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New big telescope for observatory Freiwald, Austria

The ASA AZ800 an 0.8m telesocpe works fully automatically.

The observatory Freiwald in Sandl (Austria), is proud of it's new large ASA telescope.

The various requests are sent to the big telescope from the office or from home. The big 0.8m telescope AZ800 sends the data directly to the desired stations, where they are conveniently processed.

Used product

The observatory Freiwald in Sandl (Austria), is proud of it's new large ASA telescope.

The ASA AZ800 an 0.8m telesocpe works fully automatically.

Products in use

ASA AZ800 f6.85

A high-end complete telescope system with 0.8m aperture

  • Optical design: Ritchey-Chrétien RC
  • Linear central obstruction: 41%
  • Focus position: Nasmyth 2 as standard, 4 as option
  • Focal length: 5480mm
  • Focal ratio system: f6.85
  • Clear Aperture / Focal Ratio Primary Mirror: 800mm (31,5 inch) / f2.5
  • Image field: 120mm (1.25 degrees)
  • Mirror material: Fused silica
  • Surface quality: >94 strehl
  • Microroughness: 1nm RMS / <0.7nm Ra
  • Coating: Al+SiO2 >96 %
  • Back Focus from flange: 252.7mm
  • Weight tube: 800 kg (1763.7 lbs)
  • Azimuth / altitude range of motion: 680 degree / 5-90 degree
  • Software: ASA API (application programming interface) available autumn 2023 ASA Software(Autoslew, Sequence-windows based, ACC) with ASCOM-Alpaca
  • Max. slew speeds: Up to 50 degrees per second
  • Pointing Accuracy (20° to 85°): <8” RMS with pointing model
  • Tracking Accuracy (20° to 85°): <0,25” RMS within 5 minutes tracking time over 5 min 0,05” RMS/min
  • System Natural Frequency: 10 Hz or greater
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