Exposure
ID
GRAVI.2025-08-07T02:40:35.126_1
Header ID
GRAVI.2025-08-07T02:40:35.126
Date updated
2025-08-07 02:55:49 UTC+0000
Release date
2026-08-07 02:55:49 UTC+0000
UTC Start
2025-08-07 02:40:35.126
UTC End
2025-08-07 02:46:35.126
MJD Start
60894.11151766
MJD End
60894.115684326665
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0034454999999999998
Ambient temperature (°C)
13.31
Seeing (arcsec)
1.115
Observation
ID
69341
Category
science
Program ID
115.27WT.004
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
51535
Name
SGRA
RA
266.41715
DEC
-29.00714
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 55.3010 55.1340 33.2000 33.8000
U1-U3 99.6430 99.2540 39.6000 40.1000
U1-U4 124.5210 123.6110 68.4540 69.0770
U2-U3 45.1020 44.8770 47.4000 47.9000
U2-U4 85.5050 84.8310 90.3470 91.1390
U3-U4 60.8080 60.4920 120.6870 121.6530
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.27WT.004
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60894.11151766
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.41715
DEC -29.00714
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 55.301
HIERARCH ESO ISS PBL12 END 55.134
HIERARCH ESO ISS PBLA12 START 33.2
HIERARCH ESO ISS PBLA12 END 33.8
HIERARCH ESO ISS PBL13 START 99.643
HIERARCH ESO ISS PBL13 END 99.254
HIERARCH ESO ISS PBLA13 START 39.6
HIERARCH ESO ISS PBLA13 END 40.1
HIERARCH ESO ISS PBL14 START 124.521
HIERARCH ESO ISS PBL14 END 123.611
HIERARCH ESO ISS PBLA14 START 68.454
HIERARCH ESO ISS PBLA14 END 69.077
HIERARCH ESO ISS PBL23 START 45.102
HIERARCH ESO ISS PBL23 END 44.877
HIERARCH ESO ISS PBLA23 START 47.4
HIERARCH ESO ISS PBLA23 END 47.9
HIERARCH ESO ISS PBL24 START 85.505
HIERARCH ESO ISS PBL24 END 84.831
HIERARCH ESO ISS PBLA24 START 90.347
HIERARCH ESO ISS PBLA24 END 91.139
HIERARCH ESO ISS PBL34 START 60.808
HIERARCH ESO ISS PBL34 END 60.492
HIERARCH ESO ISS PBLA34 START 120.687
HIERARCH ESO ISS PBLA34 END 121.653
HIERARCH ESO ISS AMBI TAU0 START 0.003463
HIERARCH ESO ISS AMBI TAU0 END 0.003428
HIERARCH ESO ISS AMBI TEMP 13.31
HIERARCH ESO ISS AMBI FWHM START 1.02
HIERARCH ESO ISS AMBI FWHM END 1.21
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0980
HIERARCH ESO FT ROBJ DELTA -290027.6520