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MacPurity | all galleries >> Galleries >> Astro Stuff > Star Catalog Density
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29-OCT-2015

Star Catalog Density

A comparison of USNO's UCAC4 and URAT1 star catalogs.
This is a detailed chart of the Owl Cluster, NGC 457, in Cassiopeia.
Plot was made via a home-made charting script that uses Generic Mapping Tools commands.


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