The spectral irradiance of the ISS is calculated by multiplying the spectral radiance of the ISS by a geometrical factor. A group of 30-watt deuterium arc lamps are the deuterium working standards. If no instructions are given, NIST will return the test item by common carrier, collect, and uninsured. Spectroradiometric source calibrations are performed in March, June, September, and December. Requests for calibration services are scheduled after the receipt of a purchase order.
NIST policy requires prepayment of all calibration services performed for non-U.S. organizations.
Please contact the Calibration Program Office to arrange payment.