Exposure
ID
GRAVI.2025-07-08T04:30:14.687_1
Header ID
GRAVI.2025-07-08T04:30:14.687
Date updated
2025-07-08 04:45:25 UTC+0000
Release date
2026-07-08 04:45:25 UTC+0000
UTC Start
2025-07-08 04:30:14.687
UTC End
2025-07-08 04:36:14.687
MJD Start
60864.18766999
MJD End
60864.19183665667
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.011293999999999998
Ambient temperature (°C)
15.79
Seeing (arcsec)
0.23
Observation
ID
68387
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
50822
Name
SGRA
RA
266.416487
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 55.4960 55.3450 32.6000 33.1000
U1-U3 100.0970 99.7470 38.9000 39.5000
U1-U4 125.5820 124.7640 67.6450 68.2760
U2-U3 45.3640 45.1620 46.7000 47.3000
U2-U4 86.2890 85.6850 89.3440 90.1250
U3-U4 61.1770 60.8930 119.4820 120.4170
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 60864.18766999
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.416487
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 55.496
HIERARCH ESO ISS PBL12 END 55.345
HIERARCH ESO ISS PBLA12 START 32.6
HIERARCH ESO ISS PBLA12 END 33.1
HIERARCH ESO ISS PBL13 START 100.097
HIERARCH ESO ISS PBL13 END 99.747
HIERARCH ESO ISS PBLA13 START 38.9
HIERARCH ESO ISS PBLA13 END 39.5
HIERARCH ESO ISS PBL14 START 125.582
HIERARCH ESO ISS PBL14 END 124.764
HIERARCH ESO ISS PBLA14 START 67.645
HIERARCH ESO ISS PBLA14 END 68.276
HIERARCH ESO ISS PBL23 START 45.364
HIERARCH ESO ISS PBL23 END 45.162
HIERARCH ESO ISS PBLA23 START 46.7
HIERARCH ESO ISS PBLA23 END 47.3
HIERARCH ESO ISS PBL24 START 86.289
HIERARCH ESO ISS PBL24 END 85.685
HIERARCH ESO ISS PBLA24 START 89.344
HIERARCH ESO ISS PBLA24 END 90.125
HIERARCH ESO ISS PBL34 START 61.177
HIERARCH ESO ISS PBL34 END 60.893
HIERARCH ESO ISS PBLA34 START 119.482
HIERARCH ESO ISS PBLA34 END 120.417
HIERARCH ESO ISS AMBI TAU0 START 0.010844
HIERARCH ESO ISS AMBI TAU0 END 0.011744
HIERARCH ESO ISS AMBI TEMP 15.79
HIERARCH ESO ISS AMBI FWHM START 0.23
HIERARCH ESO ISS AMBI FWHM END 0.23
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6520