The ASA 0.8-Meter Telescope f/6.85 is a fully automated observatory telescope system with a Ritchey-Chrétien optical design. It’s equipped with an Alt-Az mount, Nasmyth focus and ASA Direct Drive motors with absolute encoders on all axes.

• Optical Design: Ritchey-Chrétien (RC)
• Central Obstruction: 41%
• Focus Position: Nasmyth; 2 as standard; 4 as option
• Focal Length: 5,480 mm
• Focal Ratio System: f/6.85
• Clear Aperture / Focal Ratio Primary Mirror: 800 mm (31.5 inch) / f/2.5
• Image Field: 120 mm (1.25 degrees)
• Back Focus from Flange: 252.7 mm
• Mirror Material: Fused Silica
• Surface Quality: <94 Strehl
• Micro-roughness: 1nm RMS / <0.7nm Ra
• Coating: Al+SiO2 >96%
• Tube Weight: 800 kg (1,763.7 lb.)
• Azimuth / Altitude Range: 680º/ 5º to 90º
• Software: ASA API (application programming interface) available Autumn 2023. ASA Software (Autoslew, Sequence-windows based) with ASCOM-Alpaca.
• Max. Slew Speed: Up to 50 degrees per second
• Pointing Accuracy (20° to 85°): <8” RMS with pointing model and ASA telescope
• 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