Optical Calibration Facility

Radiometric Calibration and Characterisation

Electro-optical system onboard a spacecraft must be calibrated in terms of engineering units before they can be used. Our optical laboratory facility is established to provide radiometric calibration and characterisation service to the development of such system and any other commercial electro-optical system. The facility includes:

• 40-inches diameter Integrating Sphere (traceable to NIST);

• 1000 watt FEL lamp (traceable to NIST);

• 1.5m x 2.5m optical table with thickness of 0.21m

All these equipments are used for characterisation and calibration of in-house developed instrument suites and for a variety of customer sensor needs such as:

• dark response

• pixel characterisation

• dynamic range

• response linearity

• noise characterisation

• noise equivalent radiance

• saturation radiance

• signal to noise ratio

• absolute radiometric coefficient