Exposure
ID
GRAVI.2025-07-07T04:29:01.155_1
Header ID
GRAVI.2025-07-07T04:29:01.155
Date updated
2025-07-07 04:45:33 UTC+0000
Release date
2026-07-07 04:45:33 UTC+0000
UTC Start
2025-07-07 04:29:01.155
UTC End
2025-07-07 04:35:01.155
MJD Start
60863.18681892
MJD End
60863.19098558667
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0085245
Ambient temperature (°C)
14.1
Seeing (arcsec)
0.4
Observation
ID
68263
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
50731
Name
SGRA
RA
266.416507
DEC
-29.00749
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 55.6080 55.4670 32.1000 32.7000
U1-U3 100.3590 100.0310 38.5000 39.0000
U1-U4 126.1880 125.4250 67.1350 67.7730
U2-U3 45.5150 45.3260 46.3000 46.8000
U2-U4 86.7350 86.1730 88.7240 89.5000
U3-U4 61.3860 61.1220 118.7480 119.6670
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 60863.18681892
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.416507
DEC -29.00749
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 55.608
HIERARCH ESO ISS PBL12 END 55.467
HIERARCH ESO ISS PBLA12 START 32.1
HIERARCH ESO ISS PBLA12 END 32.7
HIERARCH ESO ISS PBL13 START 100.359
HIERARCH ESO ISS PBL13 END 100.031
HIERARCH ESO ISS PBLA13 START 38.5
HIERARCH ESO ISS PBLA13 END 39.0
HIERARCH ESO ISS PBL14 START 126.188
HIERARCH ESO ISS PBL14 END 125.425
HIERARCH ESO ISS PBLA14 START 67.135
HIERARCH ESO ISS PBLA14 END 67.773
HIERARCH ESO ISS PBL23 START 45.515
HIERARCH ESO ISS PBL23 END 45.326
HIERARCH ESO ISS PBLA23 START 46.3
HIERARCH ESO ISS PBLA23 END 46.8
HIERARCH ESO ISS PBL24 START 86.735
HIERARCH ESO ISS PBL24 END 86.173
HIERARCH ESO ISS PBLA24 START 88.724
HIERARCH ESO ISS PBLA24 END 89.5
HIERARCH ESO ISS PBL34 START 61.386
HIERARCH ESO ISS PBL34 END 61.122
HIERARCH ESO ISS PBLA34 START 118.748
HIERARCH ESO ISS PBLA34 END 119.667
HIERARCH ESO ISS AMBI TAU0 START 0.008507
HIERARCH ESO ISS AMBI TAU0 END 0.008542
HIERARCH ESO ISS AMBI TEMP 14.1
HIERARCH ESO ISS AMBI FWHM START 0.39
HIERARCH ESO ISS AMBI FWHM END 0.41
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6520