Archives of Photographic PLates for Astronomical USE

Scan table (applause_dr2.scan)

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 DR2, 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.

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
scan_aid char meta.id Identification number for OAI/PMH
filename_scan char meta.ref
meta.fits
Name of the scan file
filename_wedge char meta.ref
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 timestamp 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
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