Exposure
ID
GRAVI.2023-06-02T08:02:02.465_1
Header ID
GRAVI.2023-06-02T08:02:02.465
Date updated
2023-06-02 08:16:01 UTC+0000
Release date
2024-06-02 08:16:01 UTC+0000
UTC Start
2023-06-02 08:02:02.465
UTC End
2023-06-02 08:08:02.465
MJD Start
60097.33475075
MJD End
60097.3389174167
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.006896
Ambient temperature (°C)
15.57
Seeing (arcsec)
0.52
Observation
ID
55627
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
41190
Name
S4
RA
266.416531
DEC
-29.00733
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 53.2330 52.9380 37.5000 37.9000
U1-U3 94.8560 94.1780 43.8000 44.1000
U1-U4 113.3760 111.8200 73.9610 74.5230
U2-U3 42.3430 41.9550 51.7000 52.0000
U2-U4 77.3270 76.2050 98.1050 99.0170
U3-U4 57.0890 56.6070 130.6100 131.8210
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 60097.33475075
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S4
RA 266.416531
DEC -29.00733
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 53.233
HIERARCH ESO ISS PBL12 END 52.938
HIERARCH ESO ISS PBLA12 START 37.5
HIERARCH ESO ISS PBLA12 END 37.9
HIERARCH ESO ISS PBL13 START 94.856
HIERARCH ESO ISS PBL13 END 94.178
HIERARCH ESO ISS PBLA13 START 43.8
HIERARCH ESO ISS PBLA13 END 44.1
HIERARCH ESO ISS PBL14 START 113.376
HIERARCH ESO ISS PBL14 END 111.82
HIERARCH ESO ISS PBLA14 START 73.961
HIERARCH ESO ISS PBLA14 END 74.523
HIERARCH ESO ISS PBL23 START 42.343
HIERARCH ESO ISS PBL23 END 41.955
HIERARCH ESO ISS PBLA23 START 51.7
HIERARCH ESO ISS PBLA23 END 52.0
HIERARCH ESO ISS PBL24 START 77.327
HIERARCH ESO ISS PBL24 END 76.205
HIERARCH ESO ISS PBLA24 START 98.105
HIERARCH ESO ISS PBLA24 END 99.017
HIERARCH ESO ISS PBL34 START 57.089
HIERARCH ESO ISS PBL34 END 56.607
HIERARCH ESO ISS PBLA34 START 130.61
HIERARCH ESO ISS PBLA34 END 131.821
HIERARCH ESO ISS AMBI TAU0 START 0.007726
HIERARCH ESO ISS AMBI TAU0 END 0.006066
HIERARCH ESO ISS AMBI TEMP 15.57
HIERARCH ESO ISS AMBI FWHM START 0.48
HIERARCH ESO ISS AMBI FWHM END 0.56
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1060
HIERARCH ESO FT ROBJ DELTA -290027.5231