Exposure
ID
GRAVI.2025-08-15T01:51:29.227_1
Header ID
GRAVI.2025-08-15T01:51:29.227
Date updated
2025-08-15 02:05:55 UTC+0000
Release date
2026-08-15 02:05:55 UTC+0000
UTC Start
2025-08-15 01:51:29.227
UTC End
2025-08-15 01:54:09.227
MJD Start
60902.07742161
MJD End
60902.07927346186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0026195000000000003
Ambient temperature (°C)
11.28
Seeing (arcsec)
1.0150000000000001
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 66.8160 66.6490 278.2000 278.6000
K0-D0 93.5680 93.3250 257.2000 257.5000
K0-J3 56.5240 56.5150 339.3180 339.6870
G2-D0 39.3730 39.3220 219.6000 219.9000
G2-J3 63.3270 63.2220 46.8080 47.0650
D0-J3 102.5080 102.3520 44.0440 44.2990
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 60902.07742161
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 66.816
HIERARCH ESO ISS PBL12 END 66.649
HIERARCH ESO ISS PBLA12 START 278.2
HIERARCH ESO ISS PBLA12 END 278.6
HIERARCH ESO ISS PBL13 START 93.568
HIERARCH ESO ISS PBL13 END 93.325
HIERARCH ESO ISS PBLA13 START 257.2
HIERARCH ESO ISS PBLA13 END 257.5
HIERARCH ESO ISS PBL14 START 56.524
HIERARCH ESO ISS PBL14 END 56.515
HIERARCH ESO ISS PBLA14 START 339.318
HIERARCH ESO ISS PBLA14 END 339.687
HIERARCH ESO ISS PBL23 START 39.373
HIERARCH ESO ISS PBL23 END 39.322
HIERARCH ESO ISS PBLA23 START 219.6
HIERARCH ESO ISS PBLA23 END 219.9
HIERARCH ESO ISS PBL24 START 63.327
HIERARCH ESO ISS PBL24 END 63.222
HIERARCH ESO ISS PBLA24 START 46.808
HIERARCH ESO ISS PBLA24 END 47.065
HIERARCH ESO ISS PBL34 START 102.508
HIERARCH ESO ISS PBL34 END 102.352
HIERARCH ESO ISS PBLA34 START 44.044
HIERARCH ESO ISS PBLA34 END 44.299
HIERARCH ESO ISS AMBI TAU0 START 0.002645
HIERARCH ESO ISS AMBI TAU0 END 0.002594
HIERARCH ESO ISS AMBI TEMP 11.28
HIERARCH ESO ISS AMBI FWHM START 0.94
HIERARCH ESO ISS AMBI FWHM END 1.09