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 TOOLS & INSTRUMENTS

Facility for spectroradiometric calibrations (FASCAL 2)
    
  FASCAL 2 facility is solely dedicated to spectral irradiance scale realizations and calibrations. The spectral irradiance standards are calibrated using a high-temperature blackbody operating at nearly 3000 K. The temperature of the blackbody is determined using detector-based techniques traceable to the SIRCUS facility. The known spectral irradiances from the HTBB is used for the spectral irradiance responsivity calibration of a double-grating monochromator which is in turn used to calibrate calibration lamps.

Specifications/Capabilities
      
                          Double-grating monochromator with photomultiplier tube, silicon diode and extended-InGaAs diode detectors are used to cover a range of wavelengths from 220 nm to 2500 nm. Four independent lamp stations are used for the calibrations.
                  Optical / photometry / laser metrology
  
            Organizations
      
      NIST HeadquartersLaboratory ProgramsPhysical Measurement LaboratorySensor Science DivisionOptical Radiation Group
              Details
          Campus
                    Gaithersburg
              Contact
      
        

C Cameron Miller
    
      
  c.miller@nist.gov
  (301) 975-4713

  Howard W. Yoon
    
      
  howard.yoon@nist.gov
  (301) 975-2482
                      Related Tools & Instruments
      
                  Facility for spectroradiometric calibrations (FASCAL)
  Related Projects
      
                  Spectroradiometry of sources
  Related Publications
      
                  FASCAL 2: A New NIST Facility for the Calibration of the Spectral Irradiance of Sources

    
    Created January 21, 2010, Updated January 20, 2022
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