Exposure
ID
GRAVI.2023-06-02T05:13:44.014_1
Header ID
GRAVI.2023-06-02T05:13:44.014
Date updated
2023-06-02 05:30:35 UTC+0000
Release date
2024-06-02 05:30:35 UTC+0000
UTC Start
2023-06-02 05:13:44.014
UTC End
2023-06-02 05:19:44.014
MJD Start
60097.21787053
MJD End
60097.2220371967
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0068445
Ambient temperature (°C)
16.21
Seeing (arcsec)
0.54
Observation
ID
55624
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
41187
Name
S4
RA
266.416762
DEC
-29.00722
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 56.5520 56.5400 22.3000 23.1000
U1-U3 102.4340 102.4270 28.6000 29.4000
U1-U4 129.8840 130.0480 56.3600 57.1980
U2-U3 46.6310 46.6400 36.2000 37.0000
U2-U4 88.8530 89.0730 77.2320 78.0530
U3-U4 61.7910 61.9920 106.9290 107.6610
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 60097.21787053
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S4
RA 266.416762
DEC -29.00722
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 56.552
HIERARCH ESO ISS PBL12 END 56.54
HIERARCH ESO ISS PBLA12 START 22.3
HIERARCH ESO ISS PBLA12 END 23.1
HIERARCH ESO ISS PBL13 START 102.434
HIERARCH ESO ISS PBL13 END 102.427
HIERARCH ESO ISS PBLA13 START 28.6
HIERARCH ESO ISS PBLA13 END 29.4
HIERARCH ESO ISS PBL14 START 129.884
HIERARCH ESO ISS PBL14 END 130.048
HIERARCH ESO ISS PBLA14 START 56.36
HIERARCH ESO ISS PBLA14 END 57.198
HIERARCH ESO ISS PBL23 START 46.631
HIERARCH ESO ISS PBL23 END 46.64
HIERARCH ESO ISS PBLA23 START 36.2
HIERARCH ESO ISS PBLA23 END 37.0
HIERARCH ESO ISS PBL24 START 88.853
HIERARCH ESO ISS PBL24 END 89.073
HIERARCH ESO ISS PBLA24 START 77.232
HIERARCH ESO ISS PBLA24 END 78.053
HIERARCH ESO ISS PBL34 START 61.791
HIERARCH ESO ISS PBL34 END 61.992
HIERARCH ESO ISS PBLA34 START 106.929
HIERARCH ESO ISS PBLA34 END 107.661
HIERARCH ESO ISS AMBI TAU0 START 0.007
HIERARCH ESO ISS AMBI TAU0 END 0.006689
HIERARCH ESO ISS AMBI TEMP 16.21
HIERARCH ESO ISS AMBI FWHM START 0.57
HIERARCH ESO ISS AMBI FWHM END 0.51
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1060
HIERARCH ESO FT ROBJ DELTA -290027.5231