Special Issues at Low frequencies: Calibration
•Nanηay present solution:
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–Uses only Cygnus A radio-galaxy, which gives a strong signal at 5000 l and 500 MHz
–Uses a 2 components model, and fits fringes
–Accuracy could be better for long baselines
–Starting a new procedure based on redundancies and short baselines: antennas are calibrated step by step, and almost no source model is needed.
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