TY - CONF AU - Jinan Zeng AU - Howard Yoon AU - George Eppeldauer AU - Leonard Hanssen AU - Joseph Rice C2 - SPIE Optics and Photonics 2009, San Diego, CA DA - 2009-10-15 LA - en PB - SPIE Optics and Photonics 2009, San Diego, CA PY - 2009 TI - Spectral irradiance responsivity calibration of InSb radiometers using the improved IR-SIRCUS at NIST ER -