Scans of photographic plates (applause_dr4.scan)
The table has 121860 rows, 28 columns.
Description
The scan table registers all ingested scans of the photographic plates, giving sizes, etc. A scan is a high-resolution image of a photographic plate or film. There can be multiple scans of a single plate. Unique Identifier scan_id
Attribution
If you have made substantial use of the data provided by APPLAUSE DR4, 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 |
---|---|---|---|---|
scan_id | int | meta.id |
Scan identification number |
|
plate_id | int | meta.id |
Plate identification number |
|
archive_id | int | meta.id |
Archive identification number |
|
filename_scan | char |
meta.ref meta.file meta.fits |
Name of the scan file |
|
filename_wedge | char |
meta.ref meta.file meta.fits |
Name of the wedge scan file |
|
naxis1 | short | meta.number |
Length of data axis 1 (number of pixels in a row) |
|
naxis2 | short | meta.number |
Length of data axis 2 (number of rows) |
|
minval | int |
phot.count stat.min |
Minimum pixel value in the image |
|
maxval | int |
phot.count stat.max |
Maximum pixel value in the image |
|
scanner | char | meta.id |
Name of the device used for digitizing the plate |
|
scan_res1 | short | meta.unit | dpi |
Scan resolution along axis 1 |
scan_res2 | short | meta.unit | dpi |
Scan resolution along axis 2 |
pixel_size1 | float | phys.size | um |
Pixel size along axis 1 |
pixel_size2 | float | phys.size | um |
Pixel size along axis 2 |
scan_software | char |
meta.id meta.software |
Name of the scanning software |
|
scan_gamma | float | meta.unit |
Scan gamma value |
|
scan_focus | char | meta.unit |
Scan focus setting |
|
wedge | char |
meta.code meta.cryptic |
Type of photometric step-wedge |
|
scan_date | char |
time.epoch time.creation |
Scan date and time |
|
scan_author | char | meta.id |
Author of the scan |
|
scan_notes | char | meta.note |
Notes about the scan |
|
origin | char |
meta.curation instr.obsty |
Institute responsible for the scan |
|
file_datetime | char |
time.creation meta.file |
Time[yyyy-mm-dd hh:mm:ss] |
Timestamp of the last change of file |
file_size | long |
meta.number meta.file |
byte |
File size |
fits_checksum | char |
meta.note meta.file meta.fits |
Checksum of the FITS file (from the CHECKSUM header keyword) |
|
fits_datasum | char |
meta.note meta.file meta.fits |
Checksum of the image part of the FITS file (from the DATASUM header keyword) |
|
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 |