E. M. Reeves

The extreme-ultraviolet spectrum of a solar active region.

Extreme-ultraviolet spectra (280-1370 A) of the brightest point in McMath Region 10266 and of the quiet solar atmosphere are presented as measured by the Harvard scanning spectrometer on OSO-6. Line identifications and physical parameters of the active region are discussed. (auth)

The Harvard experiment on OSO-6 - Instrumentation, calibration, operation, and description of observations.

The Harvard experiment carried by OSO-6 was an extreme-ultraviolet (EUV) spectrometer-spectroheliometer with a wavelength range of 285 to 1385 A, a spatial and spectral bandwidth of 35 x 35(arc sec) squared and 3 A, respectively. The instrument acquired data that have been deposited with the National Space Science Data Center and World Data Center A at the Goddard Space Flight Center in Greenbelt, Maryland, and are now available in their entirety to the scientific community. Aspects of the experiment that are relevant to potential users of the data are described - namely, instrument configuration and parameters, laboratory and inflight calibrations, as well as operational capabilities and procedures. The observations obtained are reported, and the nature, number, and dates of observation, where relevant, are listed.