Radiometric Measurement Comparisons at NASA's Goddard Space Flight Center: Part I. The GSFC Sphere Sources

Published

May 1, 2002

Author(s)

James J. Butler, B. Carol Johnson, R Barnes

Abstract

From March 30 through April 9, 2001, thirteen radiometers participated in a radiometric measurement comparison at the National Aeronautics and Space Administration's Goddard Space Fight Center (NASA's GSFC). These radiometers made measurements from the ultraviolet through the shortwave infrared wavelength regions on four sources of uniform radiance. These sources included the Ntaional Institute of Standrds and Technology (NIST) Portable Radiance Source (NPR) (Brown and Johnson 1999), the GSFC Code 920.1 180 cm diameter integrating sphere known as Hardy, the GSFC Code 916 50.8 cm diameter integrating sphere, and a Spectralon panel illuminated by two NIST irradiance standard lamps.

Citation

The Earth Observer

Volume

14

Issue

No. 3

Pub Type

Journals

Keywords

calibration, Earth Observing System, measurement comparison

Citation

Butler, J. , Johnson, B. and Barnes, R. (2002), Radiometric Measurement Comparisons at NASA's Goddard Space Flight Center: Part I. The GSFC Sphere Sources, The Earth Observer (Accessed October 7, 2025)