Archives of Photographic PLates for Astronomical USE

Photometric calibration in sub-fields (applause_dr3.phot_subfield)

The table has 35706768 rows, 24 columns.

Description

This table contains photometric error estimates for individual magnitude ranges in annular bins. Unique Identifier sub_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
sub_id int meta.id
meta.main

Unique sub-field identification number

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

phot_sub_grid short meta.number

Grid level for the current sub-field, expressed as the number of divisions of an image in one axis. Possible values: 2, 4, 8, 16, 32.

phot_sub_id int meta.id

Hierarchical sub-field number, characterising the size and location of the sub-field in the image. 1 - lower left, 2 - lower right, 3 - top left, 4 - top right. First level (grid 2): 1, 2, 3, 4; second level (grid 4): 11, 12, 13, 14, 21, 22, ..., 44; third level (grid 8): 111, 112, 113, 114, 121, 122, ..., 444; fourth level (grid 16): 1111, 1112, ..., 4444; fifth level (grid 32): 11111, 11112, ..., 44444.

parent_sub_id int meta.id

Hierarchical sub-field number for the parent sub-field (0 for grid level 2). Example: for sub-field 2134, the parent sub-field is 213.

x_min float pos.cartesian.x
stat.min

X-coordinate of the left edge of the sub-field

x_max float pos.cartesian.x
stat.max

X-coordinate of the right edge of the sub-field

y_min float pos.cartesian.y
stat.min

Y-coordinate of the bottom edge of the sub-field

y_max float pos.cartesian.y
stat.max

Y-coordinate of the top edge of the sub-field

num_selected_stars int meta.number

Number of selected stars for improving photometric calibration in the sub-field

above_threshold short meta.code

1 if the number of selected stars is above threshold (50) for improving photometric calibration in the subfield, 0 otherwise

num_fit_stars int meta.number

Number of stars actually used for improving photometric calibration in the sub-field (remaining after sigma clipping)

correction_min float phot.mag
phot.calib
stat.min
mag

Minimum magnitude correction that was applied in the current sub-field

correction_max float phot.mag
phot.calib
stat.max
mag

Maximum magnitude correction that was applied in the current sub-field

num_applied_stars int meta.number None

Number of stars in the sub-field to which the improved photometric calibration was applied

rmse_min float stat.error
phot.mag
em.opt
stat.min
mag

Minimum root-mean-square (RMS) error estimate for magnitudes in the plate natural photometric system in the sub-field

rmse_median float stat.error
phot.mag
em.opt
stat.median
mag

Median root-mean-square (RMS) error estimate for magnitudes in the plate natural photometric system in the sub-field

rmse_max float stat.error
phot.mag
em.opt
stat.max
mag

Maximum root-mean-square (RMS) error estimate for magnitudes in the plate natural photometric system in the sub-field

timestamp_insert char time.creation Time[yyyy-mm-dd hh:mm:ss]

Timestamp of insert

timestamp_update char time.creation Time[yyyy-mm-dd hh:mm:ss]

Timestamp of last update