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OPTICAL US-77-FACILITY |
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This is intended for the assembly, alignment and measurement of the optical characteristics of large long-focus lenses with an entrance pupil of up to 1500 mm and optoelectronic devices based on them.
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| Technical data |
| Spectral region | visible and IR |
| Focal distance of mirror collimators | 15000 and 25000 mm |
| Clear aperture of collimators | 985 and 1850 mm |
| RMS deviation of collimator's wave front | λ/25 (λ~0.63 µm) |
| Internal diameter of mounts for devices | 2000 mm |
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COMPLEX SIMULATING KMS-FACILITIES |
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This is intended to simulate the object-background conditions by means of optical radiation simulators, to carry out optical-engineering tests, and to study the output parameters.
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| Characteristics simulated |
| Object irradiance at the entrance pupil of systems under study; |
| Mechanical trajectories of objects with given angular velocities; |
| Irradiance caused by the extended background sources (the Earth, planets etc.); |
| Spatial and spectral distribution of the background radiation; |
| Angular movement of the background in the field of view of the instrumentation tested. |
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A FS-5000 FACILITY TO MEASURE THE LIGHT-SCATTERING CHARACTERISTICS OF OPTICAL SYSTEMS |
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This measures the scattering and attenuation coefficients of large (entrance pupil diameters up to 1500 mm) long-focus optical systems in the visible and near IR spectral range arising from background illumination.
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| Technical data |
| Diameter of integrating photometric sphere | 5000 m |
| Reflectance of working surface | 86% |
| Clear aperture of collimator lens | 1560 mm |
| Focal length of collimator lens | 4985 mm |
| Light scattering coefficient of collimator lens | 2.8% |
| Relative luminance of blackbody simulator | <0.001 |
| Diameters of internal aperture of integrating photometric sphere | 25...1700 mm |
| Altitude of optical axis over floor | 3100 mm |
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