Exposure
ID
GRAVI.2025-03-18T09:46:47.189_1
Header ID
GRAVI.2025-03-18T09:46:47.189
Date updated
2025-03-18 10:00:47 UTC+0000
Release date
2026-03-18 10:00:46 UTC+0000
UTC Start
2025-03-18 09:46:47.189
UTC End
2025-03-18 09:52:47.189
MJD Start
60752.40749061
MJD End
60752.411657276665
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.006475
Ambient temperature (°C)
15.74
Seeing (arcsec)
0.64
Observation
ID
65498
Category
science
Program ID
114.270V.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 / WIDMANN / MANG / DRESCHER / RIBEIRO / SADUN BORDONI / STRAUBMEIER / GARCIA / PAUMARD / BOURDAROT / STURM / LUTZ / LE BOUQUIN / CAO / KREIDBERG / HOENIG / FOSCHI / PERRIN / CARDOSO / AIMAR / URSO / ABD EL DAYEM / ROU
Target
ID
48762
Name
SGRA
RA
266.417193
DEC
-29.00784
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 56.5520 56.5580 19.4000 20.2000
U1-U3 102.3460 102.3860 25.6000 26.4000
U1-U4 128.8420 129.1910 53.1420 54.0420
U2-U3 46.5200 46.5620 33.1000 34.0000
U2-U4 87.6150 88.0170 74.1340 74.9920
U3-U4 60.7490 61.0800 104.3090 105.0130
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 114.270V.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60752.40749061
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.417193
DEC -29.00784
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 56.552
HIERARCH ESO ISS PBL12 END 56.558
HIERARCH ESO ISS PBLA12 START 19.4
HIERARCH ESO ISS PBLA12 END 20.2
HIERARCH ESO ISS PBL13 START 102.346
HIERARCH ESO ISS PBL13 END 102.386
HIERARCH ESO ISS PBLA13 START 25.6
HIERARCH ESO ISS PBLA13 END 26.4
HIERARCH ESO ISS PBL14 START 128.842
HIERARCH ESO ISS PBL14 END 129.191
HIERARCH ESO ISS PBLA14 START 53.142
HIERARCH ESO ISS PBLA14 END 54.042
HIERARCH ESO ISS PBL23 START 46.52
HIERARCH ESO ISS PBL23 END 46.562
HIERARCH ESO ISS PBLA23 START 33.1
HIERARCH ESO ISS PBLA23 END 34.0
HIERARCH ESO ISS PBL24 START 87.615
HIERARCH ESO ISS PBL24 END 88.017
HIERARCH ESO ISS PBLA24 START 74.134
HIERARCH ESO ISS PBLA24 END 74.992
HIERARCH ESO ISS PBL34 START 60.749
HIERARCH ESO ISS PBL34 END 61.08
HIERARCH ESO ISS PBLA34 START 104.309
HIERARCH ESO ISS PBLA34 END 105.013
HIERARCH ESO ISS AMBI TAU0 START 0.007181
HIERARCH ESO ISS AMBI TAU0 END 0.005769
HIERARCH ESO ISS AMBI TEMP 15.74
HIERARCH ESO ISS AMBI FWHM START 0.68
HIERARCH ESO ISS AMBI FWHM END 0.6
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6530