Exposure
ID
GRAVI.2025-07-07T03:12:57.961_1
Header ID
GRAVI.2025-07-07T03:12:57.961
Date updated
2025-07-07 03:30:42 UTC+0000
Release date
2026-07-07 03:30:42 UTC+0000
UTC Start
2025-07-07 03:12:57.961
UTC End
2025-07-07 03:18:57.961
MJD Start
60863.13400418
MJD End
60863.138170846665
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.008314499999999999
Ambient temperature (°C)
14.01
Seeing (arcsec)
0.51
Observation
ID
68253
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
50722
Name
SGRA
RA
266.416177
DEC
-29.00743
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 56.5020 56.4730 24.5000 25.2000
U1-U3 102.3690 102.3150 30.8000 31.6000
U1-U4 130.2030 130.2020 58.7430 59.5270
U2-U3 46.6280 46.6060 38.5000 39.2000
U2-U4 89.3460 89.4130 79.5900 80.3820
U3-U4 62.2750 62.3730 109.0760 109.8280
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 60863.13400418
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.416177
DEC -29.00743
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 56.502
HIERARCH ESO ISS PBL12 END 56.473
HIERARCH ESO ISS PBLA12 START 24.5
HIERARCH ESO ISS PBLA12 END 25.2
HIERARCH ESO ISS PBL13 START 102.369
HIERARCH ESO ISS PBL13 END 102.315
HIERARCH ESO ISS PBLA13 START 30.8
HIERARCH ESO ISS PBLA13 END 31.6
HIERARCH ESO ISS PBL14 START 130.203
HIERARCH ESO ISS PBL14 END 130.202
HIERARCH ESO ISS PBLA14 START 58.743
HIERARCH ESO ISS PBLA14 END 59.527
HIERARCH ESO ISS PBL23 START 46.628
HIERARCH ESO ISS PBL23 END 46.606
HIERARCH ESO ISS PBLA23 START 38.5
HIERARCH ESO ISS PBLA23 END 39.2
HIERARCH ESO ISS PBL24 START 89.346
HIERARCH ESO ISS PBL24 END 89.413
HIERARCH ESO ISS PBLA24 START 79.59
HIERARCH ESO ISS PBLA24 END 80.382
HIERARCH ESO ISS PBL34 START 62.275
HIERARCH ESO ISS PBL34 END 62.373
HIERARCH ESO ISS PBLA34 START 109.076
HIERARCH ESO ISS PBLA34 END 109.828
HIERARCH ESO ISS AMBI TAU0 START 0.009672
HIERARCH ESO ISS AMBI TAU0 END 0.006957
HIERARCH ESO ISS AMBI TEMP 14.01
HIERARCH ESO ISS AMBI FWHM START 0.45
HIERARCH ESO ISS AMBI FWHM END 0.57
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6520