Exposure
ID
GRAVI.2025-07-10T04:57:55.502_1
Header ID
GRAVI.2025-07-10T04:57:55.502
Date updated
2025-07-10 05:15:33 UTC+0000
Release date
2025-07-10 04:57:55 UTC+0000
UTC Start
2025-07-10 04:57:55.502
UTC End
2025-07-10 05:03:55.502
MJD Start
60866.20689238
MJD End
60866.21105904667
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0074745
Ambient temperature (°C)
13.46
Seeing (arcsec)
0.39
Observation
ID
68535
Category
calibrator
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
50970
Name
R2
RA
266.417608
DEC
-29.00787
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 54.5080 54.2860 35.3000 35.8000
U1-U3 97.8020 97.2850 41.7000 42.1000
U1-U4 120.2090 119.0040 71.0240 71.6150
U2-U3 44.0380 43.7400 49.5000 50.0000
U2-U4 82.3170 81.4300 93.7400 94.5710
U3-U4 59.3220 58.9150 124.9150 125.9810
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.27WT.003
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,DUAL
MJD-OBS 60866.20689238
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME R2
RA 266.417608
DEC -29.00787
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 54.508
HIERARCH ESO ISS PBL12 END 54.286
HIERARCH ESO ISS PBLA12 START 35.3
HIERARCH ESO ISS PBLA12 END 35.8
HIERARCH ESO ISS PBL13 START 97.802
HIERARCH ESO ISS PBL13 END 97.285
HIERARCH ESO ISS PBLA13 START 41.7
HIERARCH ESO ISS PBLA13 END 42.1
HIERARCH ESO ISS PBL14 START 120.209
HIERARCH ESO ISS PBL14 END 119.004
HIERARCH ESO ISS PBLA14 START 71.024
HIERARCH ESO ISS PBLA14 END 71.615
HIERARCH ESO ISS PBL23 START 44.038
HIERARCH ESO ISS PBL23 END 43.74
HIERARCH ESO ISS PBLA23 START 49.5
HIERARCH ESO ISS PBLA23 END 50.0
HIERARCH ESO ISS PBL24 START 82.317
HIERARCH ESO ISS PBL24 END 81.43
HIERARCH ESO ISS PBLA24 START 93.74
HIERARCH ESO ISS PBLA24 END 94.571
HIERARCH ESO ISS PBL34 START 59.322
HIERARCH ESO ISS PBL34 END 58.915
HIERARCH ESO ISS PBLA34 START 124.915
HIERARCH ESO ISS PBLA34 END 125.981
HIERARCH ESO ISS AMBI TAU0 START 0.00793
HIERARCH ESO ISS AMBI TAU0 END 0.007019
HIERARCH ESO ISS AMBI TEMP 13.46
HIERARCH ESO ISS AMBI FWHM START 0.41
HIERARCH ESO ISS AMBI FWHM END 0.37
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6520