Exposure
ID
GRAVI.2025-07-07T03:43:16.038_1
Header ID
GRAVI.2025-07-07T03:43:16.038
Date updated
2025-07-07 04:00:47 UTC+0000
Release date
2026-07-07 04:00:47 UTC+0000
UTC Start
2025-07-07 03:43:16.038
UTC End
2025-07-07 03:49:16.038
MJD Start
60863.15504674
MJD End
60863.15921340667
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.009698499999999999
Ambient temperature (°C)
14.35
Seeing (arcsec)
0.495
Observation
ID
68258
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
50726
Name
SGRA
RA
266.416434
DEC
-29.00737
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 56.2980 56.2310 27.8000 28.4000
U1-U3 101.9430 101.7940 34.1000 34.8000
U1-U4 129.6710 129.3810 62.3020 63.0170
U2-U3 46.4150 46.3330 41.9000 42.5000
U2-U4 89.2000 89.0160 83.2670 84.0350
U3-U4 62.4450 62.3880 112.7080 113.5100
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 60863.15504674
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.416434
DEC -29.00737
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 56.298
HIERARCH ESO ISS PBL12 END 56.231
HIERARCH ESO ISS PBLA12 START 27.8
HIERARCH ESO ISS PBLA12 END 28.4
HIERARCH ESO ISS PBL13 START 101.943
HIERARCH ESO ISS PBL13 END 101.794
HIERARCH ESO ISS PBLA13 START 34.1
HIERARCH ESO ISS PBLA13 END 34.8
HIERARCH ESO ISS PBL14 START 129.671
HIERARCH ESO ISS PBL14 END 129.381
HIERARCH ESO ISS PBLA14 START 62.302
HIERARCH ESO ISS PBLA14 END 63.017
HIERARCH ESO ISS PBL23 START 46.415
HIERARCH ESO ISS PBL23 END 46.333
HIERARCH ESO ISS PBLA23 START 41.9
HIERARCH ESO ISS PBLA23 END 42.5
HIERARCH ESO ISS PBL24 START 89.2
HIERARCH ESO ISS PBL24 END 89.016
HIERARCH ESO ISS PBLA24 START 83.267
HIERARCH ESO ISS PBLA24 END 84.035
HIERARCH ESO ISS PBL34 START 62.445
HIERARCH ESO ISS PBL34 END 62.388
HIERARCH ESO ISS PBLA34 START 112.708
HIERARCH ESO ISS PBLA34 END 113.51
HIERARCH ESO ISS AMBI TAU0 START 0.00996
HIERARCH ESO ISS AMBI TAU0 END 0.009437
HIERARCH ESO ISS AMBI TEMP 14.35
HIERARCH ESO ISS AMBI FWHM START 0.49
HIERARCH ESO ISS AMBI FWHM END 0.5
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6520