Exposure
ID
GRAVI.2025-07-07T05:55:07.374_1
Header ID
GRAVI.2025-07-07T05:55:07.374
Date updated
2025-07-07 06:10:41 UTC+0000
Release date
2026-07-07 06:10:40 UTC+0000
UTC Start
2025-07-07 05:55:07.374
UTC End
2025-07-07 06:01:07.374
MJD Start
60863.24661313
MJD End
60863.25077979667
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0056065
Ambient temperature (°C)
13.75
Seeing (arcsec)
0.625
Observation
ID
68273
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
50741
Name
SGRA
RA
266.416466
DEC
-29.00752
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 52.6410 52.3190 38.2000 38.6000
U1-U3 93.4980 92.7610 44.5000 44.8000
U1-U4 110.2660 108.5860 75.0590 75.6110
U2-U3 41.5660 41.1450 52.4000 52.7000
U2-U4 75.0920 73.8940 99.9110 100.8620
U3-U4 56.1370 55.6410 133.0110 134.2790
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 60863.24661313
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.416466
DEC -29.00752
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 52.641
HIERARCH ESO ISS PBL12 END 52.319
HIERARCH ESO ISS PBLA12 START 38.2
HIERARCH ESO ISS PBLA12 END 38.6
HIERARCH ESO ISS PBL13 START 93.498
HIERARCH ESO ISS PBL13 END 92.761
HIERARCH ESO ISS PBLA13 START 44.5
HIERARCH ESO ISS PBLA13 END 44.8
HIERARCH ESO ISS PBL14 START 110.266
HIERARCH ESO ISS PBL14 END 108.586
HIERARCH ESO ISS PBLA14 START 75.059
HIERARCH ESO ISS PBLA14 END 75.611
HIERARCH ESO ISS PBL23 START 41.566
HIERARCH ESO ISS PBL23 END 41.145
HIERARCH ESO ISS PBLA23 START 52.4
HIERARCH ESO ISS PBLA23 END 52.7
HIERARCH ESO ISS PBL24 START 75.092
HIERARCH ESO ISS PBL24 END 73.894
HIERARCH ESO ISS PBLA24 START 99.911
HIERARCH ESO ISS PBLA24 END 100.862
HIERARCH ESO ISS PBL34 START 56.137
HIERARCH ESO ISS PBL34 END 55.641
HIERARCH ESO ISS PBLA34 START 133.011
HIERARCH ESO ISS PBLA34 END 134.279
HIERARCH ESO ISS AMBI TAU0 START 0.005834
HIERARCH ESO ISS AMBI TAU0 END 0.005379
HIERARCH ESO ISS AMBI TEMP 13.75
HIERARCH ESO ISS AMBI FWHM START 0.5
HIERARCH ESO ISS AMBI FWHM END 0.75
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6520