Exposure
ID
GRAVI.2023-07-05T04:04:58.387_1
Header ID
GRAVI.2023-07-05T04:04:58.387
Date updated
2023-07-05 04:20:26 UTC+0000
Release date
2024-07-05 04:20:26 UTC+0000
UTC Start
2023-07-05 04:04:58.387
UTC End
2023-07-05 04:10:58.387
MJD Start
60130.17012022
MJD End
60130.1742868867
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0029645
Ambient temperature (°C)
13.89
Seeing (arcsec)
0.985
Observation
ID
56146
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
41593
Name
S4
RA
266.416855
DEC
-29.0073
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 56.1670 56.0820 29.0000 29.6000
U1-U3 101.6490 101.4560 35.3000 36.0000
U1-U4 129.0850 128.6720 63.6080 64.3070
U2-U3 46.2530 46.1440 43.1000 43.7000
U2-U4 88.8190 88.5340 84.6800 85.4530
U3-U4 62.3150 62.1990 114.1970 115.0350
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 60130.17012022
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S4
RA 266.416855
DEC -29.0073
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 56.167
HIERARCH ESO ISS PBL12 END 56.082
HIERARCH ESO ISS PBLA12 START 29.0
HIERARCH ESO ISS PBLA12 END 29.6
HIERARCH ESO ISS PBL13 START 101.649
HIERARCH ESO ISS PBL13 END 101.456
HIERARCH ESO ISS PBLA13 START 35.3
HIERARCH ESO ISS PBLA13 END 36.0
HIERARCH ESO ISS PBL14 START 129.085
HIERARCH ESO ISS PBL14 END 128.672
HIERARCH ESO ISS PBLA14 START 63.608
HIERARCH ESO ISS PBLA14 END 64.307
HIERARCH ESO ISS PBL23 START 46.253
HIERARCH ESO ISS PBL23 END 46.144
HIERARCH ESO ISS PBLA23 START 43.1
HIERARCH ESO ISS PBLA23 END 43.7
HIERARCH ESO ISS PBL24 START 88.819
HIERARCH ESO ISS PBL24 END 88.534
HIERARCH ESO ISS PBLA24 START 84.68
HIERARCH ESO ISS PBLA24 END 85.453
HIERARCH ESO ISS PBL34 START 62.315
HIERARCH ESO ISS PBL34 END 62.199
HIERARCH ESO ISS PBLA34 START 114.197
HIERARCH ESO ISS PBLA34 END 115.035
HIERARCH ESO ISS AMBI TAU0 START 0.003115
HIERARCH ESO ISS AMBI TAU0 END 0.002814
HIERARCH ESO ISS AMBI TEMP 13.89
HIERARCH ESO ISS AMBI FWHM START 1.01
HIERARCH ESO ISS AMBI FWHM END 0.96
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1060
HIERARCH ESO FT ROBJ DELTA -290027.5231