Description
The APPLAUSE DR3s contains metadata about the Solar photographic plates of the Einsteinturm and data extracted from the digitzed plates.
The metadata characterizing observation and instrument are collected in table solarplate, the scan process in table scan.
Tables level0, level1 and level2 contain the data resulting from the different processing applied.
level 0
is the result of converting the scan (tiff format, 8bit ) into a photographic positive image
level 1
processing results in a resampled 16bit image, calibrated and with standard solar orientation
level 2
contains the limb-darkening corrected full-disk with enhanced contrast
For a more detailed description of the processing and its results see: Pal, P., et al. , Solar Observatory Einstein Tower — Data Release of the Digitized Solar Full-disk Photographic Plate Archive.
Attribution
If you have made substantial use of the data provided by APPLAUSE DR3, kindly include this acknowledgement
Funding for APPLAUSE has been provided by DFG (German Research Foundation, Grant), Leibniz Institute for Astrophysics Potsdam (AIP), Dr. Remeis Sternwarte Bamberg (University Nuernberg/Erlangen), the Hamburger Sternwarte (University of Hamburg) and Tartu Observatory. Plate material also has been made available from Thüringer Landessternwarte Tautenburg.
The solar plates from the Einsteinturm in Potsdam are a contribution of the AIP"s Solar Physics Section with support by the European Commission"s Horizon 2020 Program under grant agreements 824064 (ESCAPE – European Science Cluster of Astronomy & Particle physics ESFRI research infrastructures) and 824135 (SOLARNET – Integrating High Resolution Solar Physics)
Tables
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
The table contains data on photographic plates of the Einsteinturm as physical objects. For the release, we enhanced the table with observation data pertaining to the plate, since there is a 1:1 relation; one plate corresponds to an observation with a short exposure time. See also the scan table. Unique Identifier: plate_id
The scan table provides scans all information available of sanning process of the photographic plates, giving sizes, etc. A scan is a high-resolution image of a photographic plate or film. In the case of the Solar plates, we provide the already preprocessed images, details see level 1 description. Unique Identifier: scan_id.
level 0 is the result of converting the scan (tiff format, 8bit ) into a photographic positive image
level 1 processing results in a resampled 16bit image, calibrated and with standard solar orientation
level 2 contains the limb-darkening corrected full-disk with enhanced contrast
Access to all files (fits level 0 to level 2, previews for level 1 and level 2)
You can access this schema using the query interface and download the results afterwards.
You can use the following DOI to cite this schema in a publication:
This dataset is published under the CC0 1.0 Universal (CC0 1.0).