Exposure
ID
GRAVI.2025-07-08T00:38:56.099_2
Header ID
GRAVI.2025-07-08T00:38:56.099
Date updated
2025-07-08 00:55:34 UTC+0000
Release date
2026-07-08 00:55:34 UTC+0000
UTC Start
2025-07-08 00:38:56.099
UTC End
2025-07-08 00:44:56.099
MJD Start
60864.02703818
MJD End
60864.031204846666
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.009340500000000002
Ambient temperature (°C)
15.66
Seeing (arcsec)
0.515
Observation
ID
68254
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
50720
Name
IRS16C
RA
266.4170791666666
DEC
-29.00768111111111
Instrument
Interferometer
VLTI
Instrument
GRAVITY_FT
Instrument mode
LOW
Instrument sub-mode
DUAL
Stations
U1 U2 U3 U4
Projected baselines
Baseline Length start Length end Angle start Angle end
U1-U2 56.2590 56.2720 4.8000 5.7000
U1-U3 100.9840 101.0600 9.9000 11.0000
U1-U4 118.2320 118.9980 34.7760 36.0780
U2-U3 45.2390 45.3190 16.4000 17.5000
U2-U4 74.9880 75.9820 56.8100 58.0740
U3-U4 50.0550 50.9590 92.7010 93.4280
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 60864.02703818
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.416193
DEC -29.00744
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 56.259
HIERARCH ESO ISS PBL12 END 56.272
HIERARCH ESO ISS PBLA12 START 4.8
HIERARCH ESO ISS PBLA12 END 5.7
HIERARCH ESO ISS PBL13 START 100.984
HIERARCH ESO ISS PBL13 END 101.06
HIERARCH ESO ISS PBLA13 START 9.9
HIERARCH ESO ISS PBLA13 END 11.0
HIERARCH ESO ISS PBL14 START 118.232
HIERARCH ESO ISS PBL14 END 118.998
HIERARCH ESO ISS PBLA14 START 34.776
HIERARCH ESO ISS PBLA14 END 36.078
HIERARCH ESO ISS PBL23 START 45.239
HIERARCH ESO ISS PBL23 END 45.319
HIERARCH ESO ISS PBLA23 START 16.4
HIERARCH ESO ISS PBLA23 END 17.5
HIERARCH ESO ISS PBL24 START 74.988
HIERARCH ESO ISS PBL24 END 75.982
HIERARCH ESO ISS PBLA24 START 56.81
HIERARCH ESO ISS PBLA24 END 58.074
HIERARCH ESO ISS PBL34 START 50.055
HIERARCH ESO ISS PBL34 END 50.959
HIERARCH ESO ISS PBLA34 START 92.701
HIERARCH ESO ISS PBLA34 END 93.428
HIERARCH ESO ISS AMBI TAU0 START 0.009253
HIERARCH ESO ISS AMBI TAU0 END 0.009428
HIERARCH ESO ISS AMBI TEMP 15.66
HIERARCH ESO ISS AMBI FWHM START 0.53
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