Exposure
ID
GRAVI.2025-05-22T06:13:50.065_1
Header ID
GRAVI.2025-05-22T06:13:50.065
Date updated
2025-05-22 06:25:53 UTC+0000
Release date
2026-05-22 06:25:53 UTC+0000
UTC Start
2025-05-22 06:13:50.065
UTC End
2025-05-22 06:16:30.065
MJD Start
60817.25960723
MJD End
60817.261459081856
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.010813
Ambient temperature (°C)
14.61
Seeing (arcsec)
0.31999999999999995
Observation
ID
67519
Category
science
Program ID
115.282E.001
Program Title
CIRCUMSTELLAR ENVELOPES OF NEARBY CEPHEIDS WITH GRAVITY TO REFINE THE PERIOD-LUMINOSITY RELATION IN THE JWST ERA
Program Type
Normal
PI / COI
HOCDÉ / NARDETTO / GALLENNE / KERVELLA / PIETRZYNSKI / GIEREN / MÉRAND / BRAS / BAILLEUL / LEFTLEY / AFANASIEV
Target
ID
50218
Name
X_Sgr
RA
266.890065
DEC
-27.83085
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
K0 G2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-G2 68.2040 68.2500 269.7000 270.0000
K0-D0 95.8950 95.9320 249.1000 249.4000
K0-J3 56.3840 56.4080 331.1570 331.4380
G2-D0 39.9850 39.9810 212.3000 212.7000
G2-J3 64.5070 64.5050 39.4650 39.7890
D0-J3 104.3010 104.2950 36.7400 37.0610
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60817.25960723
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V X Sgr
HIERARCH ESO INS SOBJ NAME X_Sgr
RA 266.890065
DEC -27.83085
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE COMBINED
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 K0
HIERARCH ESO ISS CONF STATION2 G2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 J3
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 68.204
HIERARCH ESO ISS PBL12 END 68.25
HIERARCH ESO ISS PBLA12 START 269.7
HIERARCH ESO ISS PBLA12 END 270.0
HIERARCH ESO ISS PBL13 START 95.895
HIERARCH ESO ISS PBL13 END 95.932
HIERARCH ESO ISS PBLA13 START 249.1
HIERARCH ESO ISS PBLA13 END 249.4
HIERARCH ESO ISS PBL14 START 56.384
HIERARCH ESO ISS PBL14 END 56.408
HIERARCH ESO ISS PBLA14 START 331.157
HIERARCH ESO ISS PBLA14 END 331.438
HIERARCH ESO ISS PBL23 START 39.985
HIERARCH ESO ISS PBL23 END 39.981
HIERARCH ESO ISS PBLA23 START 212.3
HIERARCH ESO ISS PBLA23 END 212.7
HIERARCH ESO ISS PBL24 START 64.507
HIERARCH ESO ISS PBL24 END 64.505
HIERARCH ESO ISS PBLA24 START 39.465
HIERARCH ESO ISS PBLA24 END 39.789
HIERARCH ESO ISS PBL34 START 104.301
HIERARCH ESO ISS PBL34 END 104.295
HIERARCH ESO ISS PBLA34 START 36.74
HIERARCH ESO ISS PBLA34 END 37.061
HIERARCH ESO ISS AMBI TAU0 START 0.009227
HIERARCH ESO ISS AMBI TAU0 END 0.012399
HIERARCH ESO ISS AMBI TEMP 14.61
HIERARCH ESO ISS AMBI FWHM START 0.35
HIERARCH ESO ISS AMBI FWHM END 0.29