Exposure
ID
GRAVI.2025-06-10T07:28:47.811_1
Header ID
GRAVI.2025-06-10T07:28:47.811
Date updated
2025-06-10 07:45:48 UTC+0000
Release date
2026-06-10 07:45:48 UTC+0000
UTC Start
2025-06-10 07:28:47.811
UTC End
2025-06-10 07:34:47.811
MJD Start
60836.31166448
MJD End
60836.31583114667
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.004253
Ambient temperature (°C)
13.7
Seeing (arcsec)
0.585
Observation
ID
67901
Category
science
Program ID
115.27WT.002
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
50498
Name
SGRA
RA
266.416859
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 53.2250 52.9310 37.5000 37.9000
U1-U3 94.8380 94.1630 43.8000 44.1000
U1-U4 113.3370 111.7880 73.9770 74.5360
U2-U3 42.3330 41.9460 51.7000 52.1000
U2-U4 77.2990 76.1830 98.1290 99.0370
U3-U4 57.0780 56.5980 130.6410 131.8470
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.27WT.002
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60836.31166448
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.416859
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 53.225
HIERARCH ESO ISS PBL12 END 52.931
HIERARCH ESO ISS PBLA12 START 37.5
HIERARCH ESO ISS PBLA12 END 37.9
HIERARCH ESO ISS PBL13 START 94.838
HIERARCH ESO ISS PBL13 END 94.163
HIERARCH ESO ISS PBLA13 START 43.8
HIERARCH ESO ISS PBLA13 END 44.1
HIERARCH ESO ISS PBL14 START 113.337
HIERARCH ESO ISS PBL14 END 111.788
HIERARCH ESO ISS PBLA14 START 73.977
HIERARCH ESO ISS PBLA14 END 74.536
HIERARCH ESO ISS PBL23 START 42.333
HIERARCH ESO ISS PBL23 END 41.946
HIERARCH ESO ISS PBLA23 START 51.7
HIERARCH ESO ISS PBLA23 END 52.1
HIERARCH ESO ISS PBL24 START 77.299
HIERARCH ESO ISS PBL24 END 76.183
HIERARCH ESO ISS PBLA24 START 98.129
HIERARCH ESO ISS PBLA24 END 99.037
HIERARCH ESO ISS PBL34 START 57.078
HIERARCH ESO ISS PBL34 END 56.598
HIERARCH ESO ISS PBLA34 START 130.641
HIERARCH ESO ISS PBLA34 END 131.847
HIERARCH ESO ISS AMBI TAU0 START 0.005208
HIERARCH ESO ISS AMBI TAU0 END 0.003298
HIERARCH ESO ISS AMBI TEMP 13.7
HIERARCH ESO ISS AMBI FWHM START 0.55
HIERARCH ESO ISS AMBI FWHM END 0.62
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6530