Archives of Photographic PLates for Astronomical USE

Photometric calibration: color term estimation (applause_dr3.phot_cterm)

Description

Fitting parameters for photometric calibration.The color term of a photographic plate was determined by fitting a photometric calibration curve with a range of trial color term values. Each fit leaves magnitude residuals. This table contains standard deviations of residuals for each fit. Unique Identifier cterm_id

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 Nürnberg/Erlangen), the Hamburger Sternwarte (University of Hamburg) and Tartu Observatory. Plate material also has been made available from Thüringer Landessternwarte Tautenburg.

Columns

Name Type UCD Unit Description
cterm_id int meta.id
meta.main
Unique identification number of the trial color term
process_id int meta.id Process identification number
scan_id int meta.id Scan identification number
exposure_id int meta.id Exposure identification number
plate_id int meta.id Plate identification number
archive_id int meta.id Archive identification number
iteration int meta.record Iteration number
cterm float stat.fit.param Trial color term for fitting the photometric calibration curve
stdev float stat.fit.residual Standard deviation of magnitude residuals after photometric calibration with a trial color term value
num_stars int meta.number Number of stars that were used for the RMS error estimation
timestamp_insert timestamp time.creation Time[yyyy-mm-dd hh:mm:ss] Timestamp of insert
timestamp_update timestamp time.creation Time[yyyy-mm-dd hh:mm:ss] Timestamp of last update