Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pasp..101.1038t&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 101, Nov. 1989, p. 1038-1045. Research supported by NSE
Astronomy and Astrophysics
Astronomy
10
Astronomical Photography, Astronomical Photometry, Data Reduction, Irises (Mechanical Apertures), Photographic Plates, Star Clusters, Calibrating, Charge Coupled Devices, Stellar Magnitude
Scientific paper
Photographic plate-measuring and reduction techniques are described which have proven to be quite successful in producing good-quality photometric data for plates of less than optimum quality. Examples are given of typical results obtained using linear calibrations of I exp 2 data derived from null-meter-centered, seeing-adjusted, and background-adjusted iris measurements. The advantages of linear calibrations for iris data are discussed.
Turner David G.
Welch Gary A.
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