Exposure
ID
GRAVI.2025-03-16T09:18:49.568_1
Header ID
GRAVI.2025-03-16T09:18:49.568
Date updated
2025-03-16 09:30:39 UTC+0000
Release date
2026-03-16 09:30:39 UTC+0000
UTC Start
2025-03-16 09:18:49.568
UTC End
2025-03-16 09:24:49.568
MJD Start
60750.3880737
MJD End
60750.392240366666
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.00758
Ambient temperature (°C)
13.5
Seeing (arcsec)
0.555
Observation
ID
65144
Category
science
Program ID
114.270V.001
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 / WIDMANN / MANG / DRESCHER / RIBEIRO / SADUN BORDONI / STRAUBMEIER / GARCIA / PAUMARD / BOURDAROT / STURM / LUTZ / LE BOUQUIN / CAO / KREIDBERG / HOENIG / FOSCHI / PERRIN / CARDOSO / AIMAR / URSO / ABD EL DAYEM / ROU
Target
ID
48515
Name
SGRA
RA
266.417538
DEC
-29.0072
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 56.4700 56.4900 14.8000 15.7000
U1-U3 101.9680 102.0510 20.7000 21.7000
U1-U4 126.1420 126.7160 47.7800 48.7980
U2-U3 46.1740 46.2490 28.0000 29.0000
U2-U4 84.5580 85.2100 69.0980 70.0480
U3-U4 58.2670 58.7970 100.4760 101.1630
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 114.270V.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60750.3880737
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.417538
DEC -29.0072
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 56.47
HIERARCH ESO ISS PBL12 END 56.49
HIERARCH ESO ISS PBLA12 START 14.8
HIERARCH ESO ISS PBLA12 END 15.7
HIERARCH ESO ISS PBL13 START 101.968
HIERARCH ESO ISS PBL13 END 102.051
HIERARCH ESO ISS PBLA13 START 20.7
HIERARCH ESO ISS PBLA13 END 21.7
HIERARCH ESO ISS PBL14 START 126.142
HIERARCH ESO ISS PBL14 END 126.716
HIERARCH ESO ISS PBLA14 START 47.78
HIERARCH ESO ISS PBLA14 END 48.798
HIERARCH ESO ISS PBL23 START 46.174
HIERARCH ESO ISS PBL23 END 46.249
HIERARCH ESO ISS PBLA23 START 28.0
HIERARCH ESO ISS PBLA23 END 29.0
HIERARCH ESO ISS PBL24 START 84.558
HIERARCH ESO ISS PBL24 END 85.21
HIERARCH ESO ISS PBLA24 START 69.098
HIERARCH ESO ISS PBLA24 END 70.048
HIERARCH ESO ISS PBL34 START 58.267
HIERARCH ESO ISS PBL34 END 58.797
HIERARCH ESO ISS PBLA34 START 100.476
HIERARCH ESO ISS PBLA34 END 101.163
HIERARCH ESO ISS AMBI TAU0 START 0.007594
HIERARCH ESO ISS AMBI TAU0 END 0.007566
HIERARCH ESO ISS AMBI TEMP 13.5
HIERARCH ESO ISS AMBI FWHM START 0.56
HIERARCH ESO ISS AMBI FWHM END 0.55
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6530