Profile fitting for the stellar photometry

Sagar, R. (1988) Profile fitting for the stellar photometry Proceedings of the workshop in imaging processing in astronomy held in Ooty 23 - 27 March 1987 . 79 - 85.

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The point spread functions used for doing photometry on two-dimensional stellar images are described. Analytical functions used for this purpose are discussed and it is indicated that amongst them modified Lorentzian fits the best to the observed stellar profile. The computer programs presently used in crowded stellar region for accurate photometry are also described.

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