Deconvolution map-making for cosmic microwave background observations

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Abstract
We describe a new map-making code for cosmic microwave background (CMB) observations. It implements fast algorithms for convolution and transpose convolution of two functions on the sphere (Wandelt & G\'{o}rski 2001). Our code can account for arbitrary beam asymmetries and can be applied to any scanning strategy. We demonstrate the method using simulated time-ordered data for three beam models and two scanning patterns, including a coarsened version of the WMAP strategy. We quantitatively compare our results with a standard map-making method and demonstrate that the true sky is recovered with high accuracy using deconvolution map-making.Comment: 9 pages, 4 figures, reference added, and small correction in figure 2. Full paper with high resolution figures at http://www.astro.uiuc.edu/~carmitag/map-making.htm

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