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- W2137519578 abstract "Calibration of the CCD camera of the 1-m telescope at the Vainu Bappu Observatory, Kavalur, to the BVR system is reported here based on the observations of stars in the 'dipper asterism' in the open cluster M 67 (NGC 2682). Transformations involving B and V have negligible colour terms, while those involving R are slightly colour dependent. The possibility of using scale-down R band fluxes to estimate the continuum flux at H-alpha is investigated by comparing the counts in R band with those through an interference filter centred at H-alpha. The scaling factor is found to remain constant over a wide range of colours. The sensitivity of the telescope-filter-CCD combination is estimated to be 2.0 per cent, 8.3 per cent and 9.7 per cent in B, V and R bands, respectively. The star F117 appears to be a small-amplitude (approximately 0.05 mag) variable." @default.
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- W2137519578 date "1991-12-01" @default.
- W2137519578 modified "2023-10-13" @default.
- W2137519578 title "Photometric calibration of the CCD camera of 1-m telescope at VBO" @default.
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- W2137519578 doi "https://doi.org/10.1007/bf02702320" @default.
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