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Photometer for detection of sodium day airglow.Description of a photometer for daytime ground-based measurements of sodium airglow emission. The photometer described can be characterized by the following principal features: (1) a narrow (4.5-A) interference filter for initial discrimination; (2) cooled photomultiplier detector to reduce noise from dark current fluctuations and chopping to eliminate the average dark current; (3) a sodium vapor resonance cell to provide an effective bandpass comparable to the Doppler line width; (4) separate detection of all light transmitted by the interference filter to evaluate the Rayleigh and Mie components within the Doppler width of the resonance cell; and (5) temperature quenching of the resonance cell to evaluate and account for instrumental imperfections.
Document ID
19730052459
Document Type
Reprint (Version printed in journal)
Authors
Mcmahon, D. J.
Manring, E. R.
Patty, R. R. (North Carolina State University Raleigh, N.C., United States)
Date Acquired
August 7, 2013
Publication Date
August 1, 1973
Publication Information
Publication: Applied Optics
Volume: 12
Subject Category
INSTRUMENTATION AND PHOTOGRAPHY
Funding Number(s)
CONTRACT_GRANT: NGL-34-002-042
Distribution Limits
Public
Copyright
Other