Computer Science – Performance
Scientific paper
Jun 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977cosp.meetr....k&link_type=abstract
COSPAR, Plenary Meeting, 20th, Tel Aviv, Israel, June 7-18, 1977, Paper. 9 p.
Computer Science
Performance
Balloon-Borne Instruments, Stellar Spectrophotometry, Telescopes, Ultraviolet Spectroscopy, Vidicons, Calibrating, Chromosphere, Interstellar Extinction, Performance Prediction, Star Trackers, Stellar Atmospheres, System Effectiveness
Scientific paper
A balloon-borne ultraviolet stellar spectrograph (BUSS) was used to obtain sectra of 33 stars with a resolution of 3 x 10 to the fourth power, at wavelengths between 200 and 340 microns. The instrument is a combination of a 40-cm-diam telescope, an echelle spectrograph, and a SEC-vidicon detector. It is mounted with star tracking systems in a balloon gondola. The design and performance of the system are discussed, and the calibration procedures are outlined. The scientific aim of the BUSS project is to study the composition and dynamic structure of stellar atmospheres, including the search for chromospheres, and to measure interstellar absorption in various directions. Samples of BUSS observations are given.
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