Exposure
ID
GRAVI.2025-03-18T09:31:44.151_1
Header ID
GRAVI.2025-03-18T09:31:44.151
Date updated
2025-03-18 09:46:13 UTC+0000
Release date
2026-03-18 09:46:13 UTC+0000
UTC Start
2025-03-18 09:31:44.151
UTC End
2025-03-18 09:37:44.151
MJD Start
60752.39703878
MJD End
60752.401205446666
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0078945
Ambient temperature (°C)
15.74
Seeing (arcsec)
0.5549999999999999
Observation
ID
65496
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
48760
Name
SGRA
RA
266.417194
DEC
-29.00783
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 56.5260 56.5400 17.5000 18.3000
U1-U3 102.2140 102.2770 23.6000 24.5000
U1-U4 127.8540 128.3090 50.9640 51.9160
U2-U3 46.3960 46.4540 31.0000 31.9000
U2-U4 86.4950 87.0080 72.0770 72.9730
U3-U4 59.8380 60.2550 102.6840 103.3820
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 60752.39703878
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.417194
DEC -29.00783
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 56.526
HIERARCH ESO ISS PBL12 END 56.54
HIERARCH ESO ISS PBLA12 START 17.5
HIERARCH ESO ISS PBLA12 END 18.3
HIERARCH ESO ISS PBL13 START 102.214
HIERARCH ESO ISS PBL13 END 102.277
HIERARCH ESO ISS PBLA13 START 23.6
HIERARCH ESO ISS PBLA13 END 24.5
HIERARCH ESO ISS PBL14 START 127.854
HIERARCH ESO ISS PBL14 END 128.309
HIERARCH ESO ISS PBLA14 START 50.964
HIERARCH ESO ISS PBLA14 END 51.916
HIERARCH ESO ISS PBL23 START 46.396
HIERARCH ESO ISS PBL23 END 46.454
HIERARCH ESO ISS PBLA23 START 31.0
HIERARCH ESO ISS PBLA23 END 31.9
HIERARCH ESO ISS PBL24 START 86.495
HIERARCH ESO ISS PBL24 END 87.008
HIERARCH ESO ISS PBLA24 START 72.077
HIERARCH ESO ISS PBLA24 END 72.973
HIERARCH ESO ISS PBL34 START 59.838
HIERARCH ESO ISS PBL34 END 60.255
HIERARCH ESO ISS PBLA34 START 102.684
HIERARCH ESO ISS PBLA34 END 103.382
HIERARCH ESO ISS AMBI TAU0 START 0.007997
HIERARCH ESO ISS AMBI TAU0 END 0.007792
HIERARCH ESO ISS AMBI TEMP 15.74
HIERARCH ESO ISS AMBI FWHM START 0.57
HIERARCH ESO ISS AMBI FWHM END 0.54
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6530