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- W1978262992 abstract "In this paper we describe a method for measuring the effective receiver temperature T erc and its variation for the entire receiver chain of a radio telescope, and use it to make a radio-continuum map of the sky at 240 MHz using the Giant Metrewave Radio Telescope (GMRT). We also show that in the case of GMRT, T erc varies mainly with elevation and ambient temperature. The calibration techniques evolved here are applicable to similar interferometers with a large number of antennas, several frequency bands and a number of receiver systems at room temperature (where conventional methods are time-consuming). This method ideally requires just one complete day of observations in a frequency band." @default.
- W1978262992 created "2016-06-24" @default.
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- W1978262992 date "2009-09-11" @default.
- W1978262992 modified "2023-09-24" @default.
- W1978262992 title "Rapid mapping of the sky at 240 MHz using the antennas of the Giant Metrewave Radio Telescope" @default.
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- W1978262992 doi "https://doi.org/10.1111/j.1365-2966.2009.14993.x" @default.
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