Accurate stellar photometry in crowded fields
نویسندگان
چکیده
منابع مشابه
Detecting stars in crowded stellar fields
A comparison is made between some conventional and new methods for detecting stars in crowded stellar images. The new methods are (1) Lucy-Richardson deconvolution of the image before detection, and (2) fitting the Point Spread Function to each pixel in the image. These methods are applied to both a synthetic image and a real one. The deconvolution method looks very promising, and gives better ...
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Abstract. A Nordic group is using the Hubble Space Telescope in a study of stellar populations in the Bar of the Large Magellanic Cloud. Through Strömgren uvby photometry, we determine ages, metallicities, and the luminosity function. We have designed and applied an exposure dithering pattern in order to decrease the effects of undersampling. This also enables a detailed study of detector prope...
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Starfinder is an IDL code for the deep analysis of stellar fields, designed for well-sampled images with high and low Strehl factor. The Point Spread Function (PSF) for the analysis is extracted directly from the CCD frame, to take into account the actual structure of the instrumental response and the atmospheric effects. An important feature is represented by the possibility to measure the ani...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1989
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/238.3.807