Exposure
ID
GRAVI.2023-07-07T02:57:14.456_1
Header ID
GRAVI.2023-07-07T02:57:14.456
Date updated
2023-07-07 03:15:48 UTC+0000
Release date
2024-07-07 03:15:48 UTC+0000
UTC Start
2023-07-07 02:57:14.456
UTC End
2023-07-07 03:03:14.456
MJD Start
60132.12308398
MJD End
60132.1272506467
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.003686
Ambient temperature (°C)
9.79
Seeing (arcsec)
0.755
Observation
ID
56167
Category
science
Program ID
111.24H1.003
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
41612
Name
S4
RA
266.416849
DEC
-29.00721
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 56.5500 56.5380 22.5000 23.2000
U1-U3 102.4340 102.4240 28.7000 29.5000
U1-U4 129.9180 130.0710 56.5140 57.3440
U2-U3 46.6340 46.6410 36.3000 37.1000
U2-U4 88.8970 89.1060 77.3820 78.1980
U3-U4 61.8300 62.0240 107.0620 107.7920
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 111.24H1.003
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60132.12308398
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S4
RA 266.416849
DEC -29.00721
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 56.55
HIERARCH ESO ISS PBL12 END 56.538
HIERARCH ESO ISS PBLA12 START 22.5
HIERARCH ESO ISS PBLA12 END 23.2
HIERARCH ESO ISS PBL13 START 102.434
HIERARCH ESO ISS PBL13 END 102.424
HIERARCH ESO ISS PBLA13 START 28.7
HIERARCH ESO ISS PBLA13 END 29.5
HIERARCH ESO ISS PBL14 START 129.918
HIERARCH ESO ISS PBL14 END 130.071
HIERARCH ESO ISS PBLA14 START 56.514
HIERARCH ESO ISS PBLA14 END 57.344
HIERARCH ESO ISS PBL23 START 46.634
HIERARCH ESO ISS PBL23 END 46.641
HIERARCH ESO ISS PBLA23 START 36.3
HIERARCH ESO ISS PBLA23 END 37.1
HIERARCH ESO ISS PBL24 START 88.897
HIERARCH ESO ISS PBL24 END 89.106
HIERARCH ESO ISS PBLA24 START 77.382
HIERARCH ESO ISS PBLA24 END 78.198
HIERARCH ESO ISS PBL34 START 61.83
HIERARCH ESO ISS PBL34 END 62.024
HIERARCH ESO ISS PBLA34 START 107.062
HIERARCH ESO ISS PBLA34 END 107.792
HIERARCH ESO ISS AMBI TAU0 START 0.003352
HIERARCH ESO ISS AMBI TAU0 END 0.00402
HIERARCH ESO ISS AMBI TEMP 9.79
HIERARCH ESO ISS AMBI FWHM START 0.89
HIERARCH ESO ISS AMBI FWHM END 0.62
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1060
HIERARCH ESO FT ROBJ DELTA -290027.5231