Accession Number:

AD0271137

Title:

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE AEROPHYSICS LAB

Personal Author(s):

• Haldeman,Charles W.

Report Date:

1961-08-01

Pagination or Media Count:

1.0

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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE