TY - CONF AU - Zeng, Jinan AU - Yoon, Howard AU - Eppeldauer, George AU - Hanssen, Leonard AU - Rice, Joseph 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 -