Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 13 June 1969:
Vol. 164. no. 3885, pp. 1271 - 1273
DOI: 10.1126/science.164.3885.1271
Prev | Table of Contents | Next

Articles

Far-Infrared Observations of the Night Sky

J. R. Houck 1 and Martin Harwit 1

1 Cornell-Syndey University Astronomy Center, Ithaca, New York 14850

We have flown a telescope cooled to liquid-helium temperatures and made far-infrared observations of the night sky. A gallium-doped germanium detector, sensitive from 5.2 to 130 micrometers, detected a minimum signal of 10-9 watt per square centimeter per steradian referred to 100 micrometers. The origin of this signal can be instrumental, atmospheric, interplanetary, or interstellar. We can place a firm upper limit on the color temperature of a dilute cosmic background flux.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Interstellar Molecules and Dense Clouds.
D. M. Rank, C. H. Townes, and W. J. Welch (1971)
Science 174, 1083-1101
   PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)