ASA AZ800 Ritchey-Chrétien telescope f6.85
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A high-end complete telescope system. AZ800 is a 0.8m (800mm) fully automated observatory telescope system. Ritchey-Chrétien Alt-Az telescope f6.85 f2.5 with Nasmyth focus Direct Drive motors with absolute encoders on all axes. Main Facts
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 |