APPLAUSE Data Release 3 published
Data Release 3 (DR3) was published on October 24, 2018. It contains images and data from the Bamberg, Hamburg, Potsdam, Tautenburg and Tartu plate collections. DR3 contains 101138 scans of 70276 photographic plates. All material of former data releases is included. Additionally, 96852 images of logbook pages and plate covers from 215 logbooks are available. More than 3.508 billion extracted sources, of which 2.065 billion have with matched UCAC4 designations, again adding a billion sources compared to DR2. Both astrometry and photometry were redone with improved accuracy. The lightcurve table of DR3 combines information from different tables for convenience. Different to DR2 we only include data from one scan, if there were more than one. More on DR3 you find at Data Release 3. For each of the 24 plate archives/collections of DR3 coverage plots are provided.
Also: with DR3 we use the new Daiquiri software which provides improved support for IVOA protocols and extended access methods. A full support for ADQL and TAP is built in now, and also support for Europeana and other sites with a OAI-PMH API.