Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...282..445o&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 282, July 15, 1984, p. 445-451. Navy-supported research.
Astronomy and Astrophysics
Astronomy
11
Early Stars, Late Stars, Milky Way Galaxy, Stellar Radiation, Stellar Spectrophotometry, Ultraviolet Astronomy, B Stars, Background Radiation, Extreme Ultraviolet Radiation, Lyman Beta Radiation, O Stars, Radiant Flux Density, Radiation Distribution
Scientific paper
Stellar observations in the extreme-ultraviolet (EUV) portion of the spectrum have been conducted by means of sounding rocket experiments. The first photometric measurements below 1000 A were carried out from a rocket by Troy et al. (1975), who used channel electron multipliers with indium bandpass filters as detectors. The present investigation is concerned with results obtained with a simple wide-field photometer similar to that employed by Troy et al. However, in this case the photometer was carried by a satellite and most of the celestial sphere could be observed. Only a few stars were spatially isolated enough for individual flux determinations to be made. However, the measurements were well suited for the determination of the total stellar radiation field between 911 A and 1050 A. The STP 72-1 satellite, which carried the experiment, was launched into a circular 750 km altitude earth orbit in October 1972.
Opal Chet B.
Weller C. S.
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