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Why are there both DAOPHOT and SExtractor source lists?

April 26, 2017daophot lists sextractor source

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Why are there both DAOPHOT and SExtractor source lists?

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Two types of source lists are available via the HLA: DAOPHOT, which is optimized for point-like objects, and SExtractor, which is optimized for extended sources. The choice of which catalog to use depends on your science. Generally the photometry and morphology information from SExtractor is much more useful for galaxies, while the DAOPHOT photometry is more accurate for point sources.