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Astron. Astrophys. Suppl. Ser. 139, 179-181

Phase calibration scheme for a "T'' array

R. Ramesh - K.R. Subramanian - Ch.V. Sastry

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Indian Institute of Astrophysics, Bangalore 560 034, India

Received January 4; accepted June 9, 1999


A calibration scheme based on closure and redundancy techniques is described for correcting the phase errors in the complex visibilities observed with a T-shaped radio interferometer array. Practical details of the scheme are illustrated with reference to the Gauribidanur radioheliograph (GRH).

Key words: radio telescopes -- interferometry -- calibration -- data analysis

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