Abstract

Observations of the radiation from the sun and the moon in a wide wavelength band centered approximately at 1.5 mm are reported. These waves were detected with a Golay detector using a searchlight mirror for a telescope. Measurements of atmospheric extinction are reported and compared with calculations of water vapor absorption which have been made by J. H. Van Vleck. It is found that the measured extinction is greater than the calculated.

Observations of the radiation emitted by the moon at different phases are reported.

The transmittances of some materials to the 1.5-mm waves from the sun are included.

© 1955 Optical Society of America

Measurement of the Solar Millimeter Spectrum*

H. H. Theissing and P. J. Caplan
J. Opt. Soc. Am. 46(11) 971-978 (1956)

Infrared Emission Spectrum of the Atmosphere*

Raymond Sloan, John H. Shaw, and Dudley Williams
J. Opt. Soc. Am. 45(6) 455-460 (1955)

High-Resolution Spectroscopy in the 3–5 Micron Region with a Small Grating Spectrometer*

R. C. Lord and T. K. Mccubbin
J. Opt. Soc. Am. 45(6) 441-446 (1955)

Luminance of the Sun

R. V. Karandikar
J. Opt. Soc. Am. 45(6) 483-488 (1955)

Measurement of Nearby Stray Radiation in Ultraviolet Spectrophotometers

D. D. Tunnicliff
J. Opt. Soc. Am. 45(11) 963-965 (1955)