Sources without magnitudes by pyplate. Unique Identifier source_id
Table of extracted sources. A row in the source table corresponds to an extracted source from a plate scan. Unique Identifier source_id
The table contains astrometric solutions of plate scans. Unique Identifier solution_id
The scan table registers all ingested scans of the photographic plates, giving sizes, etc. Unique Identifier scan_id
This table contains raw magnitudes (from source table), sky coordinates and source designations, exposure and observation time. Unique Identifier source_id.
The plate_logpage table stores links between plates and logbook pages / plate envelopes.
The process table contains data on pyplate's processing of source extraction and astrometric calibration of plate scans. Unique Identifier process_id
The table contains data on photographic plates or films as physical objects. An entry in this table does not guarantee that a scan of the plate is available. Unique Identifier plate_id
The logpage table contains data on individual digitized logbook pages and also images of plate covers/envelopes. Unique Identifier logpage_id
An archive in APPLAUSE is a collection of plates, logbooks, and extracted data that originate from a specific instrument. The archive table contains one row for each plate archive. Unique Identifier archive_id
Exposure time and observation time for plates. Unique Identifier exposure_id
HEALPix center coordinates (nside=256, nested scheme)
Information about logbooks from various archives or observation sites. There is no direct relation betweeen a plate and a logbook. Unique Identifier logpage_id
The APPLAUSE Data Release 1 (DR1) contains digitized photographic plates from the Bamberg, Hamburg and Potsdam observatories. Over 25 thousand plate scans and a catalogue of over 1.6 billion extracted sources are available to the astronomy community and to the public. The oldest published plates date back to 1909 and the newest are from 1976. The majority of plate scans include astrometric solutions, making it possible to match the historic observations with contemporary object catalogues.