Exposure
ID
GRAVI.2025-03-18T08:34:17.004_1
Header ID
GRAVI.2025-03-18T08:34:17.004
Date updated
2025-03-18 08:50:38 UTC+0000
Release date
2026-03-18 08:50:37 UTC+0000
UTC Start
2025-03-18 08:34:17.004
UTC End
2025-03-18 08:40:17.004
MJD Start
60752.35714125
MJD End
60752.36130791667
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0083705
Ambient temperature (°C)
15.73
Seeing (arcsec)
0.42
Observation
ID
65489
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
48753
Name
SGRA
RA
266.417204
DEC
-29.00783
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 56.3500 56.3710 9.8000 10.7000
U1-U3 101.4460 101.5400 15.4000 16.4000
U1-U4 122.3440 123.0670 41.5400 42.7000
U2-U3 45.6990 45.7860 22.3000 23.3000
U2-U4 80.1330 80.9940 63.2720 64.3590
U3-U4 54.5900 55.3190 96.5690 97.2630
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 60752.35714125
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.417204
DEC -29.00783
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 56.35
HIERARCH ESO ISS PBL12 END 56.371
HIERARCH ESO ISS PBLA12 START 9.8
HIERARCH ESO ISS PBLA12 END 10.7
HIERARCH ESO ISS PBL13 START 101.446
HIERARCH ESO ISS PBL13 END 101.54
HIERARCH ESO ISS PBLA13 START 15.4
HIERARCH ESO ISS PBLA13 END 16.4
HIERARCH ESO ISS PBL14 START 122.344
HIERARCH ESO ISS PBL14 END 123.067
HIERARCH ESO ISS PBLA14 START 41.54
HIERARCH ESO ISS PBLA14 END 42.7
HIERARCH ESO ISS PBL23 START 45.699
HIERARCH ESO ISS PBL23 END 45.786
HIERARCH ESO ISS PBLA23 START 22.3
HIERARCH ESO ISS PBLA23 END 23.3
HIERARCH ESO ISS PBL24 START 80.133
HIERARCH ESO ISS PBL24 END 80.994
HIERARCH ESO ISS PBLA24 START 63.272
HIERARCH ESO ISS PBLA24 END 64.359
HIERARCH ESO ISS PBL34 START 54.59
HIERARCH ESO ISS PBL34 END 55.319
HIERARCH ESO ISS PBLA34 START 96.569
HIERARCH ESO ISS PBLA34 END 97.263
HIERARCH ESO ISS AMBI TAU0 START 0.008806
HIERARCH ESO ISS AMBI TAU0 END 0.007935
HIERARCH ESO ISS AMBI TEMP 15.73
HIERARCH ESO ISS AMBI FWHM START 0.41
HIERARCH ESO ISS AMBI FWHM END 0.43
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6530