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ASA800 Ritchey-Chrétien f6.85 telescope

The evolution milestone of telescopes.

The ASA800 0.8m is the largest aperture OTA offered from ASA without mount. Perfect fit for the ASA direct drive mounts with absolute encoders. As all ASA telescopes the ASA800 is equipped with quartz glass optics from ASA Our optics guarantee diffraction limited performance and best micro roughness numbers even under the most perfect earthbound astronomical seeing conditions while maintaining a fast f-ratio primary mirror design leading to less obstruction, higher contrast and a more compact system.

f6.85/f2.5 full carbon Richey-Chrétien design with absolute encoder secondary mirror focusing unit.

FROM $ 192,000.- net

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ASA800 Ritchey-Chrétien f6.85 telescopeThe evolution milestone of telescopes.

Main Facts

Image Quality FWHM
Fast Ritchey-Chrétien RC
Linear central obstruction
41%
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 the flange
345.73mm
Weight
246kg (542lbs)

RC & CDK Comparison

In our comparison, we compare our corrected RC to a CDK (corrected Dall-Kirkham):

1. The ASA RC primary mirrors are faster than a CDK and therefore the OTA is significantly shorter.
2. The CDK design requires a larger secondary for a given aperture (RC offers higher contrast).
3. ASA’s design is more versatile than the CDK where the corrective optics must be used.

Technical Details

01 Electronics

Our closed loop direct drive systems, sensor technology and observatory safety modules play a major role in achieving optimum results. All moving accessory components are equipped with high-resolution encoders and closed-loop feedback systems. We provide event timer modules, and customer updatable firmware.

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02 Optic

Only the best for your telescope!

We believe that the most important part in producing optics is the testing. So ASA decided that we invest in the best test equipment available, remove any measuring error as good as possible and use real values in our specifications.

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03 Technology

Our mounts are manufactured with the lastest CNC technology.

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04 Software

Platform independent control software.

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ASA Services

Services for your telescope. Competitively priced for value with a complete ASA telescope and mount package!

ASA Accessories

Accessories for your telescope. Best price for value with a complete ASA telescope and mount package!

ASA In-house production

The competent partner that provides you with the whole package – ASA, guarantees the highest standard! Interferometric metrology, CNC machining, meter class optics, light weight mirrors, telescope systems, ground stations, assembly, factory testing and commissioning, everything is done by ASA itself.

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