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How do I make sense of the entries in the PS1 data tables?

The PS1 databases are complex, with information stored in many different tables. The PS1 Sample queries page gives some examples that can be helpful in getting an overview of the use of the tables. The PS1 Database object and detection tables page has detailed descriptions of the tables that have data on individual objects.  You can search within this page for particular columns or quantities. There are other pages that describe tables with observational metadata (e.g., exposure dates and times) and catalog metadata (e.g., information on flags).

How can I distinguish stars from galaxies in the catalog?

There are several possible approaches to separate extended objects from point sources.  See the page describing how to separate stars and galaxies for suggested approaches.

PS1 astrometry

How good is PS1 astrometry?

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