Souradeep, TarunRatra, Bharat2012-03-132012-03-132001-07-05http://hdl.handle.net/11007/1444We develop computationally rapid methods to compute the window function for a cosmic microwave background anisotropy experiment with a non-circular beam which scans over large angles on the sky. To concretely illustrate these methods we compute the window function for the Python V experiment which scans over large angles on the sky with an elliptical Gaussian beam.enCosmic microwave backgroundCosmology: theoryMethods: analyticalMethods: data analysisArticle