Exposure
ID
GRAVI.2025-08-10T02:18:00.110_1
Header ID
GRAVI.2025-08-10T02:18:00.110
Date updated
2025-08-10 02:35:32 UTC+0000
Release date
2026-08-10 02:35:32 UTC+0000
UTC Start
2025-08-10 02:18:00.110
UTC End
2025-08-10 02:24:00.110
MJD Start
60897.09583461
MJD End
60897.10000127667
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0036355000000000003
Ambient temperature (°C)
12.25
Seeing (arcsec)
0.8
Observation
ID
69680
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
51744
Name
SGRA
RA
266.417401
DEC
-29.00658
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 55.5520 55.4050 32.3000 32.9000
U1-U3 100.2280 99.8870 38.7000 39.3000
U1-U4 125.8840 125.0900 67.3960 68.0330
U2-U3 45.4400 45.2430 46.5000 47.1000
U2-U4 86.5120 85.9250 89.0400 89.8220
U3-U4 61.2810 61.0060 119.1210 120.0530
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 60897.09583461
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.417401
DEC -29.00658
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 55.552
HIERARCH ESO ISS PBL12 END 55.405
HIERARCH ESO ISS PBLA12 START 32.3
HIERARCH ESO ISS PBLA12 END 32.9
HIERARCH ESO ISS PBL13 START 100.228
HIERARCH ESO ISS PBL13 END 99.887
HIERARCH ESO ISS PBLA13 START 38.7
HIERARCH ESO ISS PBLA13 END 39.3
HIERARCH ESO ISS PBL14 START 125.884
HIERARCH ESO ISS PBL14 END 125.09
HIERARCH ESO ISS PBLA14 START 67.396
HIERARCH ESO ISS PBLA14 END 68.033
HIERARCH ESO ISS PBL23 START 45.44
HIERARCH ESO ISS PBL23 END 45.243
HIERARCH ESO ISS PBLA23 START 46.5
HIERARCH ESO ISS PBLA23 END 47.1
HIERARCH ESO ISS PBL24 START 86.512
HIERARCH ESO ISS PBL24 END 85.925
HIERARCH ESO ISS PBLA24 START 89.04
HIERARCH ESO ISS PBLA24 END 89.822
HIERARCH ESO ISS PBL34 START 61.281
HIERARCH ESO ISS PBL34 END 61.006
HIERARCH ESO ISS PBLA34 START 119.121
HIERARCH ESO ISS PBLA34 END 120.053
HIERARCH ESO ISS AMBI TAU0 START 0.003334
HIERARCH ESO ISS AMBI TAU0 END 0.003937
HIERARCH ESO ISS AMBI TEMP 12.25
HIERARCH ESO ISS AMBI FWHM START 0.85
HIERARCH ESO ISS AMBI FWHM END 0.75
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0980
HIERARCH ESO FT ROBJ DELTA -290027.6520