Exposure
ID
GRAVI.2025-05-13T09:31:44.195_1
Header ID
GRAVI.2025-05-13T09:31:44.195
Date updated
2025-05-13 09:50:42 UTC+0000
Release date
2026-05-13 09:50:42 UTC+0000
UTC Start
2025-05-13 09:31:44.195
UTC End
2025-05-13 09:37:44.195
MJD Start
60808.39703929
MJD End
60808.40120595667
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0127705
Ambient temperature (°C)
16.37
Seeing (arcsec)
0.26
Observation
ID
67346
Category
science
Program ID
115.27WT.001
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 / MANG / DRESCHER / RIBEIRO / SADUN BORDONI / STRAUBMEIER / GARCIA / PAUMARD / BOURDAROT / STURM / LUTZ / LE BOUQUIN / CAO / KREIDBERG / HOENIG / FOSCHI / PERRIN / CARDOSO / AIMAR / URSO / ABD EL DAYEM / ROUSSELET-PER
Target
ID
50087
Name
SGRA
RA
266.416487
DEC
-29.00751
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 52.6250 52.3020 38.2000 38.6000
U1-U3 93.4610 92.7220 44.5000 44.8000
U1-U4 110.1810 108.4980 75.0870 75.6390
U2-U3 41.5440 41.1220 52.4000 52.7000
U2-U4 75.0310 73.8320 99.9590 100.9110
U3-U4 56.1120 55.6150 133.0750 134.3440
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.27WT.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60808.39703929
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.416487
DEC -29.00751
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 52.625
HIERARCH ESO ISS PBL12 END 52.302
HIERARCH ESO ISS PBLA12 START 38.2
HIERARCH ESO ISS PBLA12 END 38.6
HIERARCH ESO ISS PBL13 START 93.461
HIERARCH ESO ISS PBL13 END 92.722
HIERARCH ESO ISS PBLA13 START 44.5
HIERARCH ESO ISS PBLA13 END 44.8
HIERARCH ESO ISS PBL14 START 110.181
HIERARCH ESO ISS PBL14 END 108.498
HIERARCH ESO ISS PBLA14 START 75.087
HIERARCH ESO ISS PBLA14 END 75.639
HIERARCH ESO ISS PBL23 START 41.544
HIERARCH ESO ISS PBL23 END 41.122
HIERARCH ESO ISS PBLA23 START 52.4
HIERARCH ESO ISS PBLA23 END 52.7
HIERARCH ESO ISS PBL24 START 75.031
HIERARCH ESO ISS PBL24 END 73.832
HIERARCH ESO ISS PBLA24 START 99.959
HIERARCH ESO ISS PBLA24 END 100.911
HIERARCH ESO ISS PBL34 START 56.112
HIERARCH ESO ISS PBL34 END 55.615
HIERARCH ESO ISS PBLA34 START 133.075
HIERARCH ESO ISS PBLA34 END 134.344
HIERARCH ESO ISS AMBI TAU0 START 0.010841
HIERARCH ESO ISS AMBI TAU0 END 0.0147
HIERARCH ESO ISS AMBI TEMP 16.37
HIERARCH ESO ISS AMBI FWHM START 0.28
HIERARCH ESO ISS AMBI FWHM END 0.24
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6530