Exposure
ID
GRAVI.2023-06-07T06:22:22.024_1
Header ID
GRAVI.2023-06-07T06:22:22.024
Date updated
2023-06-07 06:35:44 UTC+0000
Release date
2024-06-07 06:35:44 UTC+0000
UTC Start
2023-06-07 06:22:22.024
UTC End
2023-06-07 06:28:22.024
MJD Start
60102.26553268
MJD End
60102.2696993467
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.011726
Ambient temperature (°C)
15.04
Seeing (arcsec)
0.36
Observation
ID
55691
Category
science
Program ID
111.24H1.002
Program Title
THE GALACTIC CENTER WITH GRAVITY - PROBING EVENT HORIZON SCALE PHYSICS WITH STARS AND FLARES
Program Type
GTO
PI / COI
EISENHAUER/ GILLESSEN/ GENZEL/ OTT/ STRAUBMEIER/ BRANDNER/ ROUSSELET-PERRAUT/ PERRIN/ GARCIA/ ECKART/ DE ZEEUW/ WIDMANN/ PAUMARD/ HORROBIN/ VINCENT/ DRESCHER/ BOURDAROT/ CAO/ LUTZ/ STURM/ RIBEIRO
Target
ID
41251
Name
S4
RA
266.416567
DEC
-29.00724
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
LOW-SPLIT
Instrument sub-mode
DUAL
Stations
U1 U2 U3 U4
Projected baselines
Baseline Length start Length end Angle start Angle end
U1-U2 55.7400 55.6100 31.5000 32.1000
U1-U3 100.6640 100.3620 37.9000 38.5000
U1-U4 126.8930 126.1960 66.4790 67.1300
U2-U3 45.6910 45.5170 45.7000 46.3000
U2-U4 87.2530 86.7410 87.9420 88.7170
U3-U4 61.6260 61.3880 117.8350 118.7400
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 111.24H1.002
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60102.26553268
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S4
RA 266.416567
DEC -29.00724
HIERARCH ESO INS SPEC RES LOW
HIERARCH ESO INS POLA MODE SPLIT
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 U1
HIERARCH ESO ISS CONF STATION2 U2
HIERARCH ESO ISS CONF STATION3 U3
HIERARCH ESO ISS CONF STATION4 U4
EXPTIME 389.0
HIERARCH ESO DET2 SEQ1 DIT 30.0
HIERARCH ESO DET2 NDIT 12
HIERARCH ESO ISS PBL12 START 55.74
HIERARCH ESO ISS PBL12 END 55.61
HIERARCH ESO ISS PBLA12 START 31.5
HIERARCH ESO ISS PBLA12 END 32.1
HIERARCH ESO ISS PBL13 START 100.664
HIERARCH ESO ISS PBL13 END 100.362
HIERARCH ESO ISS PBLA13 START 37.9
HIERARCH ESO ISS PBLA13 END 38.5
HIERARCH ESO ISS PBL14 START 126.893
HIERARCH ESO ISS PBL14 END 126.196
HIERARCH ESO ISS PBLA14 START 66.479
HIERARCH ESO ISS PBLA14 END 67.13
HIERARCH ESO ISS PBL23 START 45.691
HIERARCH ESO ISS PBL23 END 45.517
HIERARCH ESO ISS PBLA23 START 45.7
HIERARCH ESO ISS PBLA23 END 46.3
HIERARCH ESO ISS PBL24 START 87.253
HIERARCH ESO ISS PBL24 END 86.741
HIERARCH ESO ISS PBLA24 START 87.942
HIERARCH ESO ISS PBLA24 END 88.717
HIERARCH ESO ISS PBL34 START 61.626
HIERARCH ESO ISS PBL34 END 61.388
HIERARCH ESO ISS PBLA34 START 117.835
HIERARCH ESO ISS PBLA34 END 118.74
HIERARCH ESO ISS AMBI TAU0 START 0.012346
HIERARCH ESO ISS AMBI TAU0 END 0.011106
HIERARCH ESO ISS AMBI TEMP 15.04
HIERARCH ESO ISS AMBI FWHM START 0.3
HIERARCH ESO ISS AMBI FWHM END 0.42
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1060
HIERARCH ESO FT ROBJ DELTA -290027.5231