Exposure
ID
GRAVI.2023-07-07T03:40:59.573_1
Header ID
GRAVI.2023-07-07T03:40:59.573
Date updated
2023-07-07 03:55:36 UTC+0000
Release date
2024-07-07 03:55:36 UTC+0000
UTC Start
2023-07-07 03:40:59.573
UTC End
2023-07-07 03:46:59.573
MJD Start
60132.15346728
MJD End
60132.1576339467
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0038745
Ambient temperature (°C)
9.49
Seeing (arcsec)
0.7
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 56.3370 56.2760 27.3000 28.0000
U1-U3 102.0300 101.8940 33.7000 34.4000
U1-U4 129.8280 129.5770 61.8170 62.5480
U2-U3 46.4620 46.3890 41.4000 42.1000
U2-U4 89.2910 89.1420 82.7530 83.5310
U3-U4 62.4650 62.4290 112.1780 112.9820
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 60132.15346728
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 56.337
HIERARCH ESO ISS PBL12 END 56.276
HIERARCH ESO ISS PBLA12 START 27.3
HIERARCH ESO ISS PBLA12 END 28.0
HIERARCH ESO ISS PBL13 START 102.03
HIERARCH ESO ISS PBL13 END 101.894
HIERARCH ESO ISS PBLA13 START 33.7
HIERARCH ESO ISS PBLA13 END 34.4
HIERARCH ESO ISS PBL14 START 129.828
HIERARCH ESO ISS PBL14 END 129.577
HIERARCH ESO ISS PBLA14 START 61.817
HIERARCH ESO ISS PBLA14 END 62.548
HIERARCH ESO ISS PBL23 START 46.462
HIERARCH ESO ISS PBL23 END 46.389
HIERARCH ESO ISS PBLA23 START 41.4
HIERARCH ESO ISS PBLA23 END 42.1
HIERARCH ESO ISS PBL24 START 89.291
HIERARCH ESO ISS PBL24 END 89.142
HIERARCH ESO ISS PBLA24 START 82.753
HIERARCH ESO ISS PBLA24 END 83.531
HIERARCH ESO ISS PBL34 START 62.465
HIERARCH ESO ISS PBL34 END 62.429
HIERARCH ESO ISS PBLA34 START 112.178
HIERARCH ESO ISS PBLA34 END 112.982
HIERARCH ESO ISS AMBI TAU0 START 0.003807
HIERARCH ESO ISS AMBI TAU0 END 0.003942
HIERARCH ESO ISS AMBI TEMP 9.49
HIERARCH ESO ISS AMBI FWHM START 0.73
HIERARCH ESO ISS AMBI FWHM END 0.67
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1060
HIERARCH ESO FT ROBJ DELTA -290027.5231