Exposure
ID
GRAVI.2025-07-10T06:07:49.680_1
Header ID
GRAVI.2025-07-10T06:07:49.680
Date updated
2025-07-10 06:25:46 UTC+0000
Release date
2026-07-10 06:25:46 UTC+0000
UTC Start
2025-07-10 06:07:49.680
UTC End
2025-07-10 06:13:49.680
MJD Start
60866.25543611
MJD End
60866.25960277666
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0056925
Ambient temperature (°C)
14.04
Seeing (arcsec)
0.44
Observation
ID
68544
Category
science
Program ID
115.27WT.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 / 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
50979
Name
SGRA
RA
266.417601
DEC
-29.00792
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 51.3370 50.9570 39.4000 39.7000
U1-U3 90.5240 89.6610 45.6000 45.8000
U1-U4 103.5290 101.5930 77.1420 77.6870
U2-U3 39.8700 39.3800 53.6000 53.8000
U2-U4 70.3340 68.9900 103.6690 104.7350
U3-U4 54.2200 53.7070 138.0130 139.4190
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.27WT.003
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60866.25543611
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.417601
DEC -29.00792
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 51.337
HIERARCH ESO ISS PBL12 END 50.957
HIERARCH ESO ISS PBLA12 START 39.4
HIERARCH ESO ISS PBLA12 END 39.7
HIERARCH ESO ISS PBL13 START 90.524
HIERARCH ESO ISS PBL13 END 89.661
HIERARCH ESO ISS PBLA13 START 45.6
HIERARCH ESO ISS PBLA13 END 45.8
HIERARCH ESO ISS PBL14 START 103.529
HIERARCH ESO ISS PBL14 END 101.593
HIERARCH ESO ISS PBLA14 START 77.142
HIERARCH ESO ISS PBLA14 END 77.687
HIERARCH ESO ISS PBL23 START 39.87
HIERARCH ESO ISS PBL23 END 39.38
HIERARCH ESO ISS PBLA23 START 53.6
HIERARCH ESO ISS PBLA23 END 53.8
HIERARCH ESO ISS PBL24 START 70.334
HIERARCH ESO ISS PBL24 END 68.99
HIERARCH ESO ISS PBLA24 START 103.669
HIERARCH ESO ISS PBLA24 END 104.735
HIERARCH ESO ISS PBL34 START 54.22
HIERARCH ESO ISS PBL34 END 53.707
HIERARCH ESO ISS PBLA34 START 138.013
HIERARCH ESO ISS PBLA34 END 139.419
HIERARCH ESO ISS AMBI TAU0 START 0.006492
HIERARCH ESO ISS AMBI TAU0 END 0.004893
HIERARCH ESO ISS AMBI TEMP 14.04
HIERARCH ESO ISS AMBI FWHM START 0.43
HIERARCH ESO ISS AMBI FWHM END 0.45
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6520