Archives of Photographic PLates for Astronomical USE

Exposure time and observation time (applause_dr1.exposure)

The table has 55691 rows, 39 columns.

Description

Exposure time and observation time for plates. Observing time is given (if possible and available) in various formats. Unique Identifier exposure_id

Attribution

If you have made substantial use of the data provided by APPLAUSE DR1, 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) and the Hamburger Sternwarte (University of Hamburg).

Columns

Name Type UCD Unit Description
exposure_id int meta.id
meta.main
Exposure identification number
plate_id int meta.id Plate identification number
archive_id int meta.id Archive identification number
exposure_num short meta.record Exposure number within the plate
object_name char meta.id Name of the observed object or field
object_type char meta.code Object type, as listed in the WFPDB
ra_orig char pos.eq.ra Original recorded right ascension of the telescope pointing (plate center)
dec_orig char pos.eq.dec Original recorded declination of the telescope pointing (plate center)
flag_coord char meta.code.qual Quality flag of the recorded coordinates (right ascension and declination)
raj2000 double pos.eq.ra deg Right ascension of the telescope pointing in decimal degrees (equinox J2000)
dej2000 double pos.eq.dec deg Declination of the telescope pointing in decimal degrees (equinox J2000)
raj2000_hms char pos.eq.ra Right ascension of the telescope pointing (equinox J2000, sexagesimal format 'h:m:s')
dej2000_dms char pos.eq.dec Declination of the telescope pointing (equinox J2000, sexagesimal format 'd:m:s')
flag_wcs short meta.code 1 if coordinates are taken from WCS solution, 0 otherwise
date_orig_start char time.start
obs.exposure
Original recorded date of the start of observation (evening date)
date_orig_end char time.end
obs.exposure
Original recorded date of the end of observation (evening date)
time_orig_start char time.start
obs.exposure
Original recorded time of the start of the observation (format 'TZ hh:mm:ss', where TZ is time zone). Time zone can be 'ST' (sidereal time), 'UT' (universal time), or any time zone. Multiple time notations are separated with commas.
time_orig_end char time.end
obs.exposure
Original recorded time of the end of the observation
flag_time char meta.code.qual Quality flag of the recorded observation time: 'error','missing', 'uncertain'
ut_start timestamp time.start
obs.exposure
Time[yyyy-mm-dd hh:mm:ss] UT date and time of the start of exposure
ut_mid timestamp time.epoch
obs.exposure
Time[yyyy-mm-dd hh:mm:ss] UT date and time of the mid-point of exposure
ut_weighted timestamp time.epoch
obs.exposure
Time[yyyy-mm-dd hh:mm:ss] UT date and time of the weighted mid-point of exposure
ut_end timestamp time.end
obs.exposure
Time[yyyy-mm-dd hh:mm:ss] UT date and time of the end of exposure
year_start double time.start
obs.exposure
Decimal year of the start of exposure
year_mid double time.epoch
obs.exposure
Decimal year of the mid-point of exposure
year_weighted double time.epoch
obs.exposure
Decimal year of the weighted mid-point of exposure
year_end double time.end
obs.exposure
Decimal year of the end of exposure
jd_start double time.start
obs.exposure
Julian date at the start of exposure
jd_mid double time.epoch
obs.exposure
Julian date at the mid-point of exposure
jd_weighted double time.epoch
obs.exposure
Julian date at the weighted mid-point of exposure
jd_end double time.end
obs.exposure
Julian date at the end of exposure
hjd_mid double time.epoch
obs.exposure
Heliocentric Julian date at the mid-point of exposure
hjd_weighted double time.epoch
obs.exposure
Heliocentric Julian date at the weighted mid-point of exposure
exptime float time.interval
obs.exposure
s Exposure time
num_sub short meta.number Number of sub-exposures
method short meta.code Observation method. A list of possible values is given in the WFPDB.
focus float stat.value Focus value (from logbook)
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