Abstract

An f/2.5 spectral radiometer, consisting of telescope and monochromator mounted on a movable head, is described. By comparison with a blackbody standard and appropriate calibration, spectral radiances can be obtained in watts/cm²-micron-steradian. Observation on many targets indicates a nearly identical radiance for all. Space scans at a given wavelength do give target distinguishability however, and a discussion of possible cause is given. Rapid variations in radiance have been observed, and are still being investigated.

© 1960 Optical Society of America

Spectral Radiance of Sky and Terrain at Wavelengths between 1 and 20 Microns. II. Sky Measurements*

Ely E. Bell, Leonard Eisner, James Young, and Robert A. Oetjen
J. Opt. Soc. Am. 50(12) 1313-1320 (1960)

Spectral Radiance of Sky and Terrain at Wavelengths between 1 and 20 Microns. I. Instrumentation*

Robert A. Oetjen, Ely E. Bell, James Young, and Leonard Eisner
J. Opt. Soc. Am. 50(12) 1308-1313 (1960)

A Spectral Radiometer for Reentry Measurements

Robert V. Meyer
Appl. Opt. 5(1) 159-165 (1966)

Spectral Radiance of Some Flames and Their Temperature Determination*

Ely E. Bell, Phillips B. Burnside, and Frederick P. Dickey
J. Opt. Soc. Am. 50(12) 1286-1292 (1960)

Distribution of Infrared Radiance over a Clear Sky

H. E. Bennett, Jean M. Bennett, and Max R. Nagel
J. Opt. Soc. Am. 50(2) 100-106 (1960)