This page describes recent changes and additions to the PS1 interfaces, services, and documentation.
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2018.10.23: Sample Python notebook for image retrievals
A simple Python script that shows how to determine what images are available at a sky position and how to retrieve the images (in FITS or JPEG/PNG format) has been added to the PS1 Image Cutout Service web page.
2017.03.17: DR1 database update adds 14M object measurements
A new version of the CasJobs PanSTARRS_DR1 database has been installed. This adds mean measurements for about 0.1% of objects that were missing in the 2017 Feb 2 release to the MeanObject table. The objects added are near declination = +30 degrees. For users who have done large-scale queries and want to get just the new objects, there is a new table to make this easier. MeanObjectMissing_03172017 has 14 million objects that were previously missing from MeanObject. It should be possible to run most queries that used MeanObject again using this much smaller table to quickly fill in missing data.
The new database replaces the old one since it is preferred for all purposes. Existing objects in the database did not change in any way. This version of the database is thought to be complete over the sky.
2017.02.02: DR1 database now has 1.5% more objects
A new version of the CasJobs PanSTARRS_DR1 database has been installed. This adds about 1.5% of objects that were missing in the 2016 Dec 19 release of ObjectThin, MeanObject, and StackObjectThin tables. For users who have done large-scale queries and want to get just the new objects, there are 3 new tables to make this easier. ObjectThinMissing has 132 million objects that were previously missing from ObjectThin; MeanObjectMissing has the same 132 million objects that were missing from MeanObject; and StackObjectThinMissing has 40 million objects that were missing from StackObjectThin. It should be possible to run most queries again using these much smaller tables to quickly fill in missing data.
The new database replaces the old one since it is preferred for all purposes. Existing objects in the database did not change in any way.
There is still a very small number of missing objects (about 0.01%) that are missing near declination = +30 degrees. Currently we do not expect those objects to be filled in before the DR2 data release (which will include all the multi-epoch PS1 photometry).
2017.02.02: PS1 sky available in MAST Portal
The MAST Data Discovery Portal now includes an option to show a PS1 image as the background in the sky viewer that shows the search results. See an article in the February 2017 MAST Newsletter for more details.
2016.12.21: PS1 DR1 caveats
A new PS1 documentation page describing PS1 DR1 caveats was added. It highlights some quirks in the PS1 DR1 data.
2016.12.21: How to separate stars and galaxies
A new PS1 documentation page describing how to separate stars and galaxies was added.
2016.12.21: Catalog search radius limited
Due to heavy demand, we are limiting the size of the allowed search radius in the catalog search form. Currently search radii must be less than 0.5 degrees for standard single-position searches and less than 0.02 degrees for file upload queries.
2016.12.20: Bug in catalog search (fixed)
A bug was introduced in the catalog search form at about 5pm EST on Tuesday 2016 December 20. The bug prevented any PS1 searches from running. It was fixed the morning of 2016 December 21.
2016.12.19: PS1 Data Release 1
The Pan-STARRS1 archive Data Release 1 (DR1) was opened to the public at 8am EST on 2016 December 19.