Exposure
ID
GRAVI.2025-06-23T03:16:12.536_1
Header ID
GRAVI.2025-06-23T03:16:12.536
Date updated
2025-06-23 03:25:50 UTC+0000
Release date
2026-06-23 03:25:50 UTC+0000
UTC Start
2025-06-23 03:16:12.536
UTC End
2025-06-23 03:18:52.536
MJD Start
60849.1362562
MJD End
60849.138108051855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.004346
Ambient temperature (°C)
11.72
Seeing (arcsec)
0.44999999999999996
Observation
ID
68166
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
50671
Name
X_Sgr
RA
266.890064
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 65.9630 66.1610 263.5000 263.8000
K0-D0 93.5760 93.7870 242.4000 242.8000
K0-J3 55.6100 55.6740 326.3840 326.6280
G2-D0 39.8390 39.8560 205.9000 206.3000
G2-J3 64.0630 64.1090 32.8430 33.2500
D0-J3 103.7210 103.7830 30.1760 30.5780
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 60849.1362562
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V X Sgr
HIERARCH ESO INS SOBJ NAME X_Sgr
RA 266.890064
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 65.963
HIERARCH ESO ISS PBL12 END 66.161
HIERARCH ESO ISS PBLA12 START 263.5
HIERARCH ESO ISS PBLA12 END 263.8
HIERARCH ESO ISS PBL13 START 93.576
HIERARCH ESO ISS PBL13 END 93.787
HIERARCH ESO ISS PBLA13 START 242.4
HIERARCH ESO ISS PBLA13 END 242.8
HIERARCH ESO ISS PBL14 START 55.61
HIERARCH ESO ISS PBL14 END 55.674
HIERARCH ESO ISS PBLA14 START 326.384
HIERARCH ESO ISS PBLA14 END 326.628
HIERARCH ESO ISS PBL23 START 39.839
HIERARCH ESO ISS PBL23 END 39.856
HIERARCH ESO ISS PBLA23 START 205.9
HIERARCH ESO ISS PBLA23 END 206.3
HIERARCH ESO ISS PBL24 START 64.063
HIERARCH ESO ISS PBL24 END 64.109
HIERARCH ESO ISS PBLA24 START 32.843
HIERARCH ESO ISS PBLA24 END 33.25
HIERARCH ESO ISS PBL34 START 103.721
HIERARCH ESO ISS PBL34 END 103.783
HIERARCH ESO ISS PBLA34 START 30.176
HIERARCH ESO ISS PBLA34 END 30.578
HIERARCH ESO ISS AMBI TAU0 START 0.003943
HIERARCH ESO ISS AMBI TAU0 END 0.004749
HIERARCH ESO ISS AMBI TEMP 11.72
HIERARCH ESO ISS AMBI FWHM START 0.47
HIERARCH ESO ISS AMBI FWHM END 0.43