by on 29/02/2016
Data Release 2 (DR2) was published on February 29, 2016. It contains data from the Bamberg, Hamburg, Potsdam, and Tartu plate collections. DR2 contains 51517 scans of 42789 plates. All material of the former data release is included in the 58115 digital images of plate covers and logbook pages, 149 logbooks. With 2.59 billion extracted sources this data release extends the former catalogs by nearly a billion sources. The lightcurve table of DR2 is calibrated and provides additional photometric information for astronomical work with the data.
The total size of the published files is 30 TB.