Performance Test of Automated Photographic Photometer and Photometry of Cluster Byur 2

Details Performance Test of Automated Photographic Photometer and Photometry of Cluster Byur 2 Performance Test of Automated Photographic Photometer and Photometry of Cluster Byur 2

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pkas....8...47c&link_type=abstract

Publications of the Korean Astronomical Society, vol.8, no.1, p.47-66

Astronomy and Astrophysics

Astronomy

Scientific paper

The Automated Eichner Iris Photometer(AEIP) at the Korea Basic Science Center was tested for its function and the proper procedure for photographic photometry. The AEIP requires about three hours for reaching the electrical stability. When the iris is controlled automatically, the repeatability of density unit(DU) is accurate in the uncertainty of (0.0028~0.0048)DU. The iris reading is found to be accurate within the mean error of 0.05m, which could be reduced to 0.02m by the manual control. To check the applicability of the AEIP, each two photographic plates for UBV colors which were taken by Dupuy and Zukauskas(1976) for the open cluster Byur 2, were measured by using the AEIP, and the photographic magnitudes and colors of the stars in Byur 2 were determined, discussing the previous results.

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