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Published July 1963 | public
Journal Article Open

An 8-14 micron infrared astronomical photometer


A system for measurement of 8-14 µ infrared emission from extra-terrestrial objects is described. The photometric system utilizes a mercury-doped germanium detector cooled to liquid hydrogen temperature to achieve increased sensitivity in this spectral region. A method is presented for minimizing the problem of atmospheric and component emission. The system has been used to measure the radiation from the star α Orionis, from the unilluminated moon, and from several planets.

Additional Information

© Copyright 2006 Optical Society of America Received 19 November 1962. Contribution No. 1122, Division of Geological Sciences, California Institute of Technology, Pasadena, California. The authors wish to express their appreciation to the Naval Ordnance Test Station, China Lake, for valuable technical assistance and support, and to the University of California personnel who manage and operate the White Mountain Research Station. We gratefully acknowledge in addition the many helpful suggestions contributed by I.S. Bowen, of the Mt. Wilson and Palomar Observatories, by R.L. Wildey and E.V. Nenow of CIT, and by R.E. Wilson and B.J. Gorrano of NOTS. This work has been supported by Grant NSF-G 25210 from the National Science Foundation and Grant NsG 56-60 from the National Aeronautics and Space Administration.


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