Computer Science – Performance
Scientific paper
Jun 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pasp...92..288r&link_type=abstract
Astronomical Society of the Pacific, Publications, vol. 92, June 1980, p. 288-299.
Computer Science
Performance
4
Globular Clusters, Main Sequence Stars, Numerical Control, Stellar Spectrophotometry, Television Equipment, Vidicons, Error Analysis, Performance Tests, Photographic Measurement, Point Sources, Star Distribution, Stellar Luminosity, Ubv Spectra
Scientific paper
A television area-photometer based on a computer controlled SEC Vidicon is described. The performance of this photometer is discussed in terms of the results obtained during tests on laboratory point sources and on a stellar UBV sequence. Calculated errors based on the known system parameters are compared with the observational data. The detector is applied to a study of the main-sequence turnoff stars in Omega Cen. With Newell's (1979) modal analysis for stars in crowded fields a calibration for subsequent photographic photometry in the cluster is established. The TV color-luminosity array confirms the anomalously faint turnoff magnitude found by Cannon and Stewart (1978) but shows a main-sequence width which is consistent with the heterogeneous composition of Omega Cen.
Harding Paul
Newell E. B.
Norris Jackson
Rodgers Alexander W.
Stapinski T.
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