VRI photometry of M67 for CCD standardization at 2.3m VBT |
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| Authors: | P N Bhat K P Singh T P Prabhu A K Kembhavi |
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| Institution: | (1) Tata Institute of Fundamental Research, 400 005 Bombay;(2) Indian Institute of Astrophysics, 560 034 Bangalore;(3) Inter University Centre for Astronomy & Astrophysics, 410 007 Pune |
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| Abstract: | We present the results from CCD photometry in theV, R andI 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 standardI filter. The CCD chip is calibrated using the photometric standards in the field and linear colour transformation relations
are derived. Also a few newVRI photometric measurements are reported for the members of the cluster. |
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| Keywords: | Open clusters M67 photometry CCD calibration |
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