Archives of Photographic PLates for Astronomical USE

Exposure data (applause_dr4.exposure)

The table has 139539 rows, 36 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 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, and from the archives of the Vatican Observatory.

Columns

Name Type UCD Unit Description
exposure_id int meta.id 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 sequence number
object_name char meta.id Name of the observed object or field
object_type_code char
ra_orig char pos.eq.ra deg Original recorded right ascension of the telescope pointing (plate center)
dec_orig char pos.eq.dec deg 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)
ra_icrs double pos.eq.ra deg Right ascension of the source (International Celestial Reference System)
dec_icrs double pos.eq.dec deg Declination of the source (International Celestial Reference System)
date_orig_start char time.start
obs.exposure
Original recorded date of the sub-exposure (evening date)
date_orig_end char time.end
obs.exposure
Original recorded date of the exposure end (evening date)
time_orig_start char time.start
obs.exposure
Original recorded start time of the sub-exposure
time_orig_end char time.end
obs.exposure
Original recorded end time of the sub-exposure
flag_time char meta.code.qual Quality flag of the recorded observation time
ut_start char time.start
obs.exposure
Time[yyyy-mm-dd hh:mm:ss] UT date and time of the start of exposure
ut_mid char time.epoch
obs.exposure
Time[yyyy-mm-dd hh:mm:ss] UT date and time at the mid-point of sub-exposure
ut_weighted char time.epoch
obs.exposure
Time[yyyy-mm-dd hh:mm:ss] UT date and time of the weighted mid-point of exposure
ut_end char time.end
obs.exposure
Time[yyyy-mm-dd hh:mm:ss] UT date and time of the sub-exposure end
year_start double time.start
obs.exposure
Decimal Julian 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 Julian year of the weighted mid-point of exposure
year_end double time.end
obs.exposure
Decimal Julian 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 sub-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
method_code short meta.code.qual
num_sub short meta.number Number of sub-exposures
focus float stat.value Focus value (from logbook)
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