BRIGHTNESS TEMPERATURES OF THE QUIET SUN AND THE NEW MOON AT 3.3- AND 5. 7-MM WAVELENGTHS

Abstract

Absolute brightness temperatures and brightness temperature ratios of the quiet sun and the center of the new moon were measured at the 3.3-mm wavelength and at several wavelengths in the 5.7-mm region. Radiometric maps of the sun and new moon are used to illustrate the problems associated with brightness temperature measurements of these sources. Measured quiet-sun/new- moon brightness temperature ratios and reported central brightness temperatures of the new moon in the millimeter wavelength region confirm the measured absolute brightness temperatures of the quiet sun. Reported solar brightness temperatures in the 5.7- to 1.0-mm wavelength interval are tabulated and presented graphically as a function of frequency and wavelength. The regression- line equation computed for the reported measurements is given for estimating solar brightness temperatures at any wavelength in this interval and is solved for the wavelengths of the reported measurements.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1970
Accession Number
AD0705135

Entities

People

  • Earl E. Reber

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Cyber
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • 5G Wireless Networks
  • Abstracts
  • Accuracy
  • Air Force
  • Air Masses
  • Aircrafts
  • Astronomy
  • Calibration
  • Equations
  • Frequency
  • Intervals
  • Measurement
  • Radio Astronomy
  • Radiometers
  • Slope
  • Solar Activity
  • Three Dimensional

Readers

  • Solar Physics
  • Spectroscopy.