NASA Logo, National Aeronautics and Space Administration
NASA Space Science Data Coordinated Archive Header

Airglow Radiation Intensity Plots on Microfilm


Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)

Time span: 1967-07-29 to 1968-02-12


This 16-mm microfilm data set was supplied by the principal investigator. It contains measurements of background Lyman-alpha radiation from space (1050 to 1350 A), Lyman-alpha night-skyglow radiation from earth (1050 to 1350 A), and far UV airglow radiation from earth (1230 to 1350 A and 1350 to 1550 A), which have been converted to radiation intensities by the use of calibration or conversion factors. The 1230- to 1350-A radiation readings are questionable since the far UV detectors lost sensitivity over a 6-week period and eventually became useless. The data consist of strip charts displaying the three radiation intensities (far UV, earth Lyman-alpha, and background space Lyman-alpha) in units of kilorayleighs vs universal time. The time period covered per plot or chart ranges from 15 min to nearly 2 h, with the most frequent interval being about 90 min. Calibration factors are also given (kilorayleighs/V), while the intensities plotted are accurate to + or -0.2 kilorayleigh. The intensity readings were taken at 2-min intervals. No orbital data are included in this data set.

Alternate Names

  • Airglow Plots, Mfilm


  • Space Physics: Ionospheric Studies


  • 67-073A-13A

Additional Information



Questions and comments about this data collection can be directed to: Dr. Dieter K. Bilitza



NameRoleOriginal AffiliationE-mail
[] NASA Logo -