Accession Number:

AD0654693

Title:

A ROCKET INSTRUMENT FOR THE MEASUREMENT OF DAY AIRGLOW,

Descriptive Note:

Corporate Author:

NORTHEASTERN UNIV BOSTON MASS

Personal Author(s):

Report Date:

1967-02-28

Pagination or Media Count:

64.0

Abstract:

Description is given of the design and construction of a rocket borne instrument for the measurement of day airglow emissions. Design criteria included greater sensitivity, background discrimination, in-flight spectral calibration and increased spectral information. A scanning photometer was designed utilizing matched interference filter pairs mounted in a rotating turret and displaced approximately 5 degrees to one another. Two matched parallel light beams produced by a beam splitter are passed through the matched interference filter pair. The resulting scans are displaced in the spectrum by 10A and provide output signals from closely adjacent spectral regions. Measuring the difference in the two signals provides emission line information and discriminates against background. The sum of the signals provides the background information. Polarizing effects corrected by use of polaroid filters at the input aperture resulted in an overall reduction in sensitivity of the instrument. Author

Subject Categories:

  • Atmospheric Physics
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE