Exposure
ID
GRAVI.2025-08-15T01:37:53.193_1
Header ID
GRAVI.2025-08-15T01:37:53.193
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 01:37:53.193
UTC End
2025-08-15 01:40:33.193
MJD Start
60902.06797677
MJD End
60902.069828621854
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0022789999999999998
Ambient temperature (°C)
11.23
Seeing (arcsec)
1.185
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 67.4750 67.3470 276.5000 276.9000
K0-D0 94.5380 94.3490 255.7000 256.0000
K0-J3 56.5540 56.5490 337.6480 338.0050
G2-D0 39.5830 39.5420 218.4000 218.6000
G2-J3 63.7480 63.6650 45.5790 45.8510
D0-J3 103.1380 103.0140 42.8210 43.0930
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 60902.06797677
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 67.475
HIERARCH ESO ISS PBL12 END 67.347
HIERARCH ESO ISS PBLA12 START 276.5
HIERARCH ESO ISS PBLA12 END 276.9
HIERARCH ESO ISS PBL13 START 94.538
HIERARCH ESO ISS PBL13 END 94.349
HIERARCH ESO ISS PBLA13 START 255.7
HIERARCH ESO ISS PBLA13 END 256.0
HIERARCH ESO ISS PBL14 START 56.554
HIERARCH ESO ISS PBL14 END 56.549
HIERARCH ESO ISS PBLA14 START 337.648
HIERARCH ESO ISS PBLA14 END 338.005
HIERARCH ESO ISS PBL23 START 39.583
HIERARCH ESO ISS PBL23 END 39.542
HIERARCH ESO ISS PBLA23 START 218.4
HIERARCH ESO ISS PBLA23 END 218.6
HIERARCH ESO ISS PBL24 START 63.748
HIERARCH ESO ISS PBL24 END 63.665
HIERARCH ESO ISS PBLA24 START 45.579
HIERARCH ESO ISS PBLA24 END 45.851
HIERARCH ESO ISS PBL34 START 103.138
HIERARCH ESO ISS PBL34 END 103.014
HIERARCH ESO ISS PBLA34 START 42.821
HIERARCH ESO ISS PBLA34 END 43.093
HIERARCH ESO ISS AMBI TAU0 START 0.002504
HIERARCH ESO ISS AMBI TAU0 END 0.002054
HIERARCH ESO ISS AMBI TEMP 11.23
HIERARCH ESO ISS AMBI FWHM START 1.03
HIERARCH ESO ISS AMBI FWHM END 1.34