visit1

Information from observatory systems about each visit in visit system 1 (visit per exposure); describes processed visit images (or calibrated exposures)

Columns

name datatype description unit nullable ivoa:ucd tap:std votable:arraysize votable:xtype votable:utype length precision
visit_id long Unique identifier. false 0
exposure_name string Official name of the exposure mapped to this visit by the 1-to-1 visit system. false 0 20* 20
controller string The abbreviation of the controller used for the observation (O, C). false 0 1
day_obs primary key int Day of observation. false meta.id.part 0
seq_num primary key int Sequence number. false meta.id.part 0
physical_filter string ID of physical filter, the filter associated with a particular instrument. true 0 32* 32
band string Name of the band used to take the visit. Abstract filter that is not associated with a particular instrument. true 0 32* 32
s_ra double Central Spatial Position in ICRS; right ascension of focal plane center derived from encoder readings and correcting for annual abberation, precession-nutation, earth orientation, atmospheric refraction, and mount/flexure model, determined without reference to a plate solution. deg true pos.eq.ra 1 Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1
s_dec double Central Spatial Position in ICRS; declination of focal plane center derived from encoder readings and correcting for annual abberation, precession-nutation, earth orientation, atmospheric refraction, and mount/flexure model, determined without reference to a plate solution. deg true pos.eq.dec 1 Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C2
sky_rotation double Targeted sky rotation angle. deg true pos.posAng 0
azimuth_start float Azimuth of focal plane center at the start of the visit. deg true pos.az.azi 0
azimuth_end float Azimuth of focal plane center at the end of the visit. deg true pos.az.azi 0
azimuth float Azimuth of focal plane center at the middle of the visit. deg true pos.az.azi 0
altitude_start float Altitude of focal plane center at the start of the visit. deg true pos.az.alt 0
altitude_end float Altitude of focal plane center at the end of the visit. deg true pos.az.alt 0
altitude float Altitude of focal plane center at the middle of the visit. deg true pos.az.alt 0
zenith_distance_start float Zenith distance at the start of the visit. deg true pos.az.zd 0
zenith_distance_end float Zenith distance at the end of the visit. deg true pos.az.zd 0
zenith_distance float Zenith distance at the middle of the visit. deg true pos.az.zd 0
airmass float Airmass of the observed line of sight at the middle of the visit. true obs.airMass 0
exp_midpt timestamp Midpoint time for visit at the fiducial center of the focal plane. array. TAI, accurate to 10ms. true time.epoch 0 * timestamp 6
exp_midpt_mjd double Midpoint time for visit at the fiducial center of the focal plane. array in MJD. TAI, accurate to 10ms. d true time.epoch 0
obs_start timestamp Start time of the visit at the fiducial center of the focal plane. array, TAI, accurate to 10ms. true time.start 0 * timestamp 6
obs_start_mjd double Start of the visit in MJD, TAI, accurate to 10ms. d true time.start 0
obs_end timestamp End time of the visit at the fiducial center of the focal plane. array, TAI, accurate to 10ms. true time.end 0 * timestamp 6
obs_end_mjd double End of the visit in MJD, TAI, accurate to 10ms. d true time.end 0
exp_time float Spatially-averaged duration of visit, accurate to 10ms. s true time.interval 0
shut_time float Spatially-averaged shutter-open duration, accurate to 10ms. s true time.interval 0
dark_time float Duration from last clear to readout, accurate to 10ms. s true time.interval 0
group_id string Identifier for the group that this visit is part of. true 0 64* 64
cur_index int Number (1-based) of the observation within its group. true 0
max_index int Expected number of observations within the group. true 0
img_type string Type of visit taken. true 0 64* 64
emulated boolean True if the visit was taken in emulation mode. true 0
science_program string Science program. true 0 64* 64
observation_reason string Reason for the observation. true 0 68* 68
target_name string Target of the observation. true 0 64* 64
air_temp float Outside air temperature in degC. true phys.temperature 0
pressure float Outside air pressure. Pa true 0
humidity float Outside relative humidity. true 0
wind_speed float Outside wind speed. m/s true 0
wind_dir float Wind direction. deg true 0
dimm_seeing float Seeing as measured by external DIMM (FWHM). arcsec true 0
shut_lower float Dome dropout door opening percentage. true 0
shut_upper float Dome main door opening percentage. true 0
focus_z float Focus Z position. true 0
simulated boolean Were any control system components simulated? true 0
vignette string Instrument blocked from the sky: UNKNOWN, NO, PARTIALLY, FULLY. true 0 10* 10
vignette_min string Lowest amount of instrument vignetting detected during the visit: UNKNOWN, NO, PARTIALLY, FULLY. true 0 10* 10
scheduler_note string A note indicating how or why the observation was chosen by the Feature Based Scheduler. true 0 1024* 1024
s_region string Sky region in STC-S format (https://www.ivoa.net/documents/STC-S/20130917/index.html). true pos.outline;obs.field 0 1024* 1024
can_see_sky boolean Whether the observation can see sky or not. true 0

Constraints

Constraint Type Definition Description
un_visit1_visit_id Unique visit_id Ensure visit_id is unique.
un_visit1_visit_id_ds Unique visit_id, day_obs, seq_num Ensure visit_id plus day_obs plus seq_num is unique.