Exposure
ID
GRAVI.2025-07-07T05:30:55.313_1
Header ID
GRAVI.2025-07-07T05:30:55.313
Date updated
2025-07-07 05:45:46 UTC+0000
Release date
2026-07-07 05:45:45 UTC+0000
UTC Start
2025-07-07 05:30:55.313
UTC End
2025-07-07 05:36:55.313
MJD Start
60863.22980686
MJD End
60863.233973526665
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0074129999999999995
Ambient temperature (°C)
13.85
Seeing (arcsec)
0.45
Observation
ID
68270
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
50738
Name
SGRA
RA
266.416474
DEC
-29.00749
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 53.7240 53.4570 36.8000 37.2000
U1-U3 95.9880 95.3710 43.1000 43.5000
U1-U4 115.9900 114.5640 72.9420 73.5110
U2-U3 42.9930 42.6390 51.0000 51.4000
U2-U4 79.2240 78.1880 96.5200 97.3940
U3-U4 57.9220 57.4640 128.5180 129.6690
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 60863.22980686
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.416474
DEC -29.00749
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 53.724
HIERARCH ESO ISS PBL12 END 53.457
HIERARCH ESO ISS PBLA12 START 36.8
HIERARCH ESO ISS PBLA12 END 37.2
HIERARCH ESO ISS PBL13 START 95.988
HIERARCH ESO ISS PBL13 END 95.371
HIERARCH ESO ISS PBLA13 START 43.1
HIERARCH ESO ISS PBLA13 END 43.5
HIERARCH ESO ISS PBL14 START 115.99
HIERARCH ESO ISS PBL14 END 114.564
HIERARCH ESO ISS PBLA14 START 72.942
HIERARCH ESO ISS PBLA14 END 73.511
HIERARCH ESO ISS PBL23 START 42.993
HIERARCH ESO ISS PBL23 END 42.639
HIERARCH ESO ISS PBLA23 START 51.0
HIERARCH ESO ISS PBLA23 END 51.4
HIERARCH ESO ISS PBL24 START 79.224
HIERARCH ESO ISS PBL24 END 78.188
HIERARCH ESO ISS PBLA24 START 96.52
HIERARCH ESO ISS PBLA24 END 97.394
HIERARCH ESO ISS PBL34 START 57.922
HIERARCH ESO ISS PBL34 END 57.464
HIERARCH ESO ISS PBLA34 START 128.518
HIERARCH ESO ISS PBLA34 END 129.669
HIERARCH ESO ISS AMBI TAU0 START 0.007565
HIERARCH ESO ISS AMBI TAU0 END 0.007261
HIERARCH ESO ISS AMBI TEMP 13.85
HIERARCH ESO ISS AMBI FWHM START 0.44
HIERARCH ESO ISS AMBI FWHM END 0.46
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6520