Exposure
ID
GRAVI.2025-03-17T09:37:06.531_1
Header ID
GRAVI.2025-03-17T09:37:06.531
Date updated
2025-03-17 09:55:55 UTC+0000
Release date
2026-03-17 09:55:55 UTC+0000
UTC Start
2025-03-17 09:37:06.531
UTC End
2025-03-17 09:43:06.531
MJD Start
60751.40077003
MJD End
60751.404936696665
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0076255
Ambient temperature (°C)
14.95
Seeing (arcsec)
0.595
Observation
ID
65234
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
48599
Name
SGRA
RA
266.417238
DEC
-29.00787
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 56.5300 56.5420 17.7000 18.5000
U1-U3 102.2290 102.2900 23.8000 24.7000
U1-U4 127.9600 128.4040 51.1810 52.1240
U2-U3 46.4100 46.4660 31.2000 32.1000
U2-U4 86.6140 87.1160 72.2810 73.1700
U3-U4 59.9350 60.3420 102.8420 103.5370
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 60751.40077003
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.417238
DEC -29.00787
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 56.53
HIERARCH ESO ISS PBL12 END 56.542
HIERARCH ESO ISS PBLA12 START 17.7
HIERARCH ESO ISS PBLA12 END 18.5
HIERARCH ESO ISS PBL13 START 102.229
HIERARCH ESO ISS PBL13 END 102.29
HIERARCH ESO ISS PBLA13 START 23.8
HIERARCH ESO ISS PBLA13 END 24.7
HIERARCH ESO ISS PBL14 START 127.96
HIERARCH ESO ISS PBL14 END 128.404
HIERARCH ESO ISS PBLA14 START 51.181
HIERARCH ESO ISS PBLA14 END 52.124
HIERARCH ESO ISS PBL23 START 46.41
HIERARCH ESO ISS PBL23 END 46.466
HIERARCH ESO ISS PBLA23 START 31.2
HIERARCH ESO ISS PBLA23 END 32.1
HIERARCH ESO ISS PBL24 START 86.614
HIERARCH ESO ISS PBL24 END 87.116
HIERARCH ESO ISS PBLA24 START 72.281
HIERARCH ESO ISS PBLA24 END 73.17
HIERARCH ESO ISS PBL34 START 59.935
HIERARCH ESO ISS PBL34 END 60.342
HIERARCH ESO ISS PBLA34 START 102.842
HIERARCH ESO ISS PBLA34 END 103.537
HIERARCH ESO ISS AMBI TAU0 START 0.007868
HIERARCH ESO ISS AMBI TAU0 END 0.007383
HIERARCH ESO ISS AMBI TEMP 14.95
HIERARCH ESO ISS AMBI FWHM START 0.64
HIERARCH ESO ISS AMBI FWHM END 0.55
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0990
HIERARCH ESO FT ROBJ DELTA -290027.6530