Abstract

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.

© 1963 Optical Society of America

A Multicolor Photoelectric Photometer for Artificial Satellite Observations

James G. Moore and Shelden D. Elliott
Appl. Opt. 2(6) 625-629 (1963)

A Double Beam Astronomical Photometer

Thomas B. McCord
Appl. Opt. 7(3) 475-478 (1968)

Optical Problems of Television Recording of the Moon and Planets from Approaching Spacecraft

E. P. Martz
Appl. Opt. 2(1) 41-50 (1963)

The 15–26 Micron Sky Emission Spectrum at Jungfraujoch (3570 m)

H. J. Bolle
Appl. Opt. 2(6) 571-580 (1963)

A Dual-Channel Pulse-Counting Astronomical Spectrophotometer

James P. Rodman
Appl. Opt. 2(2) 165-175 (1963)