2020.06.29: PS1 VO Table Access Protocol information added
2020.06.29: Missing data sky regions updated
2019.12.11: Easy cross-match using the MAST catalogs API
2019.02.25: ForcedMeanObject and ForcedMeanLensing tables available
2019.01.28: PS1 Data Release 2
2018.10.23: Sample Python notebook for image retrievals
2017.03.17: DR1 database update adds 14M object measurements
2017.02.02: DR1 database now has 1.5 percent more objects
2017.02.02: PS1 sky available in MAST Portal
2016.12.21: PS1 DR1 caveats
2016.12.21: How to separate stars and galaxies
2016.12.21: Catalog search radius limited
2016.12.20: Bug in catalog search (fixed)
2016.12.19: PS1 Data Release 1