Exposure
ID
GRAVI.2025-07-08T05:23:56.824_1
Header ID
GRAVI.2025-07-08T05:23:56.824
Date updated
2025-07-08 05:40:58 UTC+0000
Release date
2026-07-08 05:40:58 UTC+0000
UTC Start
2025-07-08 05:23:56.824
UTC End
2025-07-08 05:29:56.824
MJD Start
60864.22496324
MJD End
60864.229129906664
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.009406000000000001
Ambient temperature (°C)
15.54
Seeing (arcsec)
0.315
Observation
ID
68393
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
50828
Name
SGRA
RA
266.416495
DEC
-29.00741
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 53.8460 53.5850 36.6000 37.0000
U1-U3 96.2680 95.6660 42.9000 43.3000
U1-U4 116.6400 115.2460 72.6710 73.2420
U2-U3 43.1550 42.8080 50.8000 51.2000
U2-U4 79.6990 78.6830 96.1130 96.9790
U3-U4 58.1340 57.6830 127.9840 129.1210
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 60864.22496324
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.416495
DEC -29.00741
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 53.846
HIERARCH ESO ISS PBL12 END 53.585
HIERARCH ESO ISS PBLA12 START 36.6
HIERARCH ESO ISS PBLA12 END 37.0
HIERARCH ESO ISS PBL13 START 96.268
HIERARCH ESO ISS PBL13 END 95.666
HIERARCH ESO ISS PBLA13 START 42.9
HIERARCH ESO ISS PBLA13 END 43.3
HIERARCH ESO ISS PBL14 START 116.64
HIERARCH ESO ISS PBL14 END 115.246
HIERARCH ESO ISS PBLA14 START 72.671
HIERARCH ESO ISS PBLA14 END 73.242
HIERARCH ESO ISS PBL23 START 43.155
HIERARCH ESO ISS PBL23 END 42.808
HIERARCH ESO ISS PBLA23 START 50.8
HIERARCH ESO ISS PBLA23 END 51.2
HIERARCH ESO ISS PBL24 START 79.699
HIERARCH ESO ISS PBL24 END 78.683
HIERARCH ESO ISS PBLA24 START 96.113
HIERARCH ESO ISS PBLA24 END 96.979
HIERARCH ESO ISS PBL34 START 58.134
HIERARCH ESO ISS PBL34 END 57.683
HIERARCH ESO ISS PBLA34 START 127.984
HIERARCH ESO ISS PBLA34 END 129.121
HIERARCH ESO ISS AMBI TAU0 START 0.010606
HIERARCH ESO ISS AMBI TAU0 END 0.008206
HIERARCH ESO ISS AMBI TEMP 15.54
HIERARCH ESO ISS AMBI FWHM START 0.29
HIERARCH ESO ISS AMBI FWHM END 0.34
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6520