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Next: 7.2 Bandpass calibration Up: 7.1 Definitions and formalism Previous: 7.1.1 Baseline based vs

7.1.2 Gain corrections

The determination of antenna-based gains (amplitudes and phases) has an obvious advantage: the physical cause of the gain variations are truly antenna-based. One may solve for the gains at the time of the observations, and correct the occurring problems to improve the quality of the data. One may re-point or re-focus the antennas to correct for an amplitude loss, correct for an instrumental delay (affecting the frequency dependence of the phases) ...



S.Guilloteau
2000-01-19