Exposure
ID
GRAVI.2025-08-08T03:10:23.797_1
Header ID
GRAVI.2025-08-08T03:10:23.797
Date updated
2025-08-08 03:25:42 UTC+0000
Release date
2026-08-08 03:25:41 UTC+0000
UTC Start
2025-08-08 03:10:23.797
UTC End
2025-08-08 03:16:23.797
MJD Start
60895.13221987
MJD End
60895.136386536666
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.002091
Ambient temperature (°C)
12.91
Seeing (arcsec)
0.865
Observation
ID
69554
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
51664
Name
SGRA
RA
266.417585
DEC
-29.00713
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 54.2850 54.0480 35.8000 36.2000
U1-U3 97.2840 96.7360 42.1000 42.6000
U1-U4 119.0020 117.7260 71.6180 72.2030
U2-U3 43.7390 43.4240 50.0000 50.4000
U2-U4 81.4280 80.4930 94.5750 95.4190
U3-U4 58.9140 58.4900 125.9850 127.0780
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 60895.13221987
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.417585
DEC -29.00713
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 54.285
HIERARCH ESO ISS PBL12 END 54.048
HIERARCH ESO ISS PBLA12 START 35.8
HIERARCH ESO ISS PBLA12 END 36.2
HIERARCH ESO ISS PBL13 START 97.284
HIERARCH ESO ISS PBL13 END 96.736
HIERARCH ESO ISS PBLA13 START 42.1
HIERARCH ESO ISS PBLA13 END 42.6
HIERARCH ESO ISS PBL14 START 119.002
HIERARCH ESO ISS PBL14 END 117.726
HIERARCH ESO ISS PBLA14 START 71.618
HIERARCH ESO ISS PBLA14 END 72.203
HIERARCH ESO ISS PBL23 START 43.739
HIERARCH ESO ISS PBL23 END 43.424
HIERARCH ESO ISS PBLA23 START 50.0
HIERARCH ESO ISS PBLA23 END 50.4
HIERARCH ESO ISS PBL24 START 81.428
HIERARCH ESO ISS PBL24 END 80.493
HIERARCH ESO ISS PBLA24 START 94.575
HIERARCH ESO ISS PBLA24 END 95.419
HIERARCH ESO ISS PBL34 START 58.914
HIERARCH ESO ISS PBL34 END 58.49
HIERARCH ESO ISS PBLA34 START 125.985
HIERARCH ESO ISS PBLA34 END 127.078
HIERARCH ESO ISS AMBI TAU0 START 0.002129
HIERARCH ESO ISS AMBI TAU0 END 0.002053
HIERARCH ESO ISS AMBI TEMP 12.91
HIERARCH ESO ISS AMBI FWHM START 0.91
HIERARCH ESO ISS AMBI FWHM END 0.82
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0980
HIERARCH ESO FT ROBJ DELTA -290027.6520