VRI photometry of M67 for CCD standardization at 2.3 M VBT

Details VRI photometry of M67 for CCD standardization at 2.3 M VBT VRI photometry of M67 for CCD standardization at 2.3 M VBT

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992japa...13..293b&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 13, no. 4, p. 293-305.

Astronomy and Astrophysics

Astrophysics

6

Astronomical Photometry, Charge Coupled Devices, Open Clusters, Astronomical Observatories, Stellar Color, Stellar Magnitude, Variable Stars

Scientific paper

We present the results from CCD photometry in the V, R and I bands, of the 'Dipper Asterism' region of the open cluster M67 based on observations carried out at the prime focus of the 2.3 m Vainu Bappu Telescope of the Vainu Bappu Observatory, Kavalur. The CCD parameters like the system gain and the readout noise are measured using several flatfield frames taken through the standard I filter. The CCD chip is calibrated using the photometric standards in the field and linear color transformation relations are derived. Also a few new VRI photometric measurements are reported for the members of the cluster.

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