Exposure
ID
GRAVI.2025-08-15T01:41:08.201_1
Header ID
GRAVI.2025-08-15T01:41:08.201
Date updated
2025-08-15 01:50:56 UTC+0000
Release date
2026-08-15 01:50:56 UTC+0000
UTC Start
2025-08-15 01:41:08.201
UTC End
2025-08-15 01:43:48.201
MJD Start
60902.07023381
MJD End
60902.07208566186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0022135
Ambient temperature (°C)
11.22
Seeing (arcsec)
1.225
Observation
ID
70010
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
51942
Name
X_Sgr
RA
266.890063
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 67.3330 67.1950 276.9000 277.3000
K0-D0 94.3280 94.1250 256.1000 256.4000
K0-J3 56.5490 56.5430 338.0440 338.4060
G2-D0 39.5370 39.4930 218.7000 218.9000
G2-J3 63.6560 63.5670 45.8810 46.1510
D0-J3 103.0000 102.8680 43.1220 43.3910
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 60902.07023381
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V X Sgr
HIERARCH ESO INS SOBJ NAME X_Sgr
RA 266.890063
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 67.333
HIERARCH ESO ISS PBL12 END 67.195
HIERARCH ESO ISS PBLA12 START 276.9
HIERARCH ESO ISS PBLA12 END 277.3
HIERARCH ESO ISS PBL13 START 94.328
HIERARCH ESO ISS PBL13 END 94.125
HIERARCH ESO ISS PBLA13 START 256.1
HIERARCH ESO ISS PBLA13 END 256.4
HIERARCH ESO ISS PBL14 START 56.549
HIERARCH ESO ISS PBL14 END 56.543
HIERARCH ESO ISS PBLA14 START 338.044
HIERARCH ESO ISS PBLA14 END 338.406
HIERARCH ESO ISS PBL23 START 39.537
HIERARCH ESO ISS PBL23 END 39.493
HIERARCH ESO ISS PBLA23 START 218.7
HIERARCH ESO ISS PBLA23 END 218.9
HIERARCH ESO ISS PBL24 START 63.656
HIERARCH ESO ISS PBL24 END 63.567
HIERARCH ESO ISS PBLA24 START 45.881
HIERARCH ESO ISS PBLA24 END 46.151
HIERARCH ESO ISS PBL34 START 103.0
HIERARCH ESO ISS PBL34 END 102.868
HIERARCH ESO ISS PBLA34 START 43.122
HIERARCH ESO ISS PBLA34 END 43.391
HIERARCH ESO ISS AMBI TAU0 START 0.002054
HIERARCH ESO ISS AMBI TAU0 END 0.002373
HIERARCH ESO ISS AMBI TEMP 11.22
HIERARCH ESO ISS AMBI FWHM START 1.34
HIERARCH ESO ISS AMBI FWHM END 1.11