Exposure
ID
GRAVI.2025-05-13T07:46:34.927_1
Header ID
GRAVI.2025-05-13T07:46:34.927
Date updated
2025-05-13 08:00:53 UTC+0000
Release date
2026-05-13 08:00:53 UTC+0000
UTC Start
2025-05-13 07:46:34.927
UTC End
2025-05-13 07:52:34.927
MJD Start
60808.32401536
MJD End
60808.328182026664
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.014718
Ambient temperature (°C)
16.43
Seeing (arcsec)
0.245
Observation
ID
67334
Category
science
Program ID
115.27WT.001
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
50075
Name
SGRA
RA
266.41649
DEC
-29.00747
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 55.9530 55.8440 30.4000 31.0000
U1-U3 101.1580 100.9070 36.8000 37.4000
U1-U4 128.0150 127.4490 65.2240 65.8920
U2-U3 45.9740 45.8310 44.6000 45.2000
U2-U4 88.0680 87.6590 86.4870 87.2550
U3-U4 61.9970 61.8130 116.1790 117.0470
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.27WT.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60808.32401536
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.41649
DEC -29.00747
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 55.953
HIERARCH ESO ISS PBL12 END 55.844
HIERARCH ESO ISS PBLA12 START 30.4
HIERARCH ESO ISS PBLA12 END 31.0
HIERARCH ESO ISS PBL13 START 101.158
HIERARCH ESO ISS PBL13 END 100.907
HIERARCH ESO ISS PBLA13 START 36.8
HIERARCH ESO ISS PBLA13 END 37.4
HIERARCH ESO ISS PBL14 START 128.015
HIERARCH ESO ISS PBL14 END 127.449
HIERARCH ESO ISS PBLA14 START 65.224
HIERARCH ESO ISS PBLA14 END 65.892
HIERARCH ESO ISS PBL23 START 45.974
HIERARCH ESO ISS PBL23 END 45.831
HIERARCH ESO ISS PBLA23 START 44.6
HIERARCH ESO ISS PBLA23 END 45.2
HIERARCH ESO ISS PBL24 START 88.068
HIERARCH ESO ISS PBL24 END 87.659
HIERARCH ESO ISS PBLA24 START 86.487
HIERARCH ESO ISS PBLA24 END 87.255
HIERARCH ESO ISS PBL34 START 61.997
HIERARCH ESO ISS PBL34 END 61.813
HIERARCH ESO ISS PBLA34 START 116.179
HIERARCH ESO ISS PBLA34 END 117.047
HIERARCH ESO ISS AMBI TAU0 START 0.015138
HIERARCH ESO ISS AMBI TAU0 END 0.014298
HIERARCH ESO ISS AMBI TEMP 16.43
HIERARCH ESO ISS AMBI FWHM START 0.24
HIERARCH ESO ISS AMBI FWHM END 0.25
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6530