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

Access

You can access this table using the query interface and download the results afterwards.

Digital object identifier

You can use the following DOI to cite this table in a publication:

https://doi.org/10.17876/plate/dr.4/2

License

This dataset is published under the CC0 1.0 Universal (CC0 1.0).