Accession Number : AD0271137

Title :  

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE AEROPHYSICS LAB

Personal Author(s) : Haldeman,Charles W.

Report Date : AUG 1961

Pagination or Media Count : 1

Abstract : A method is given for determining the frequency spectrum of the sky background by analyzing the output of the photomultiplier tube when a sinusoidal chopper is used. Design of the chopper is discussed. The photomultiplier tube detection circuit was refrigerated and the results on system performance were estimated. (Author)

Descriptors :   *NIGHT SKY, *PHOTOMETERS, AIRCRAFT SEARCHLIGHTS, CAMERA SHUTTERS, COOLING, INFRARED RADIATION, OPTICAL COMMUNICATIONS, LUMINESCENCE, MEASUREMENT, PHOTOMULTIPLIER TUBES, ROTARY SEALS

Distribution Statement : APPROVED FOR PUBLIC RELEASE