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Tools and Instruments

Displaying 1 - 10 of 10

Aperture area measurement facility

NIST has established an absolute aperture area measurement facility for circular and near-circular apertures use in radiometric instruments. The facility

Lunar spectro-radiometer

Design of the lunar irradiance instrument is based on commercially available spectrographs. These spectrographs can be stable and sub-components are readily

Si EUV Photodiode Transfer Standard

Silicon (Si) photodiodes are issued by NIST as transfer standard detectors throughout the extreme ultraviolet spectral region (5 nm to 254 nm). Each device is

SIRCUS facility and uncertainties

The basic SIRCUS calibration setup is shown at the right. The output from a tunable laser is sent through an intensity stabilizer, then through a 'speckle

Spectral comparator facilities

Visible to near-infrared spectral comparator facility (Vis/NIR SCF)The Vis/NIR SCF is a monochromator-based system that typically measures the spectral power

Telescope calibration facility (TCF)

The Telescope Calibration Facility (TCF) was designed to support the NIST Stars project by providing a facility to radiometricly calibrate long focal length