Exposure
ID
GRAVI.2025-08-15T01:31:08.176_1
Header ID
GRAVI.2025-08-15T01:31:08.176
Date updated
2025-08-15 01:45:52 UTC+0000
Release date
2026-08-15 01:45:52 UTC+0000
UTC Start
2025-08-15 01:31:08.176
UTC End
2025-08-15 01:33:48.176
MJD Start
60902.06328907
MJD End
60902.065140921855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002504
Ambient temperature (°C)
11.11
Seeing (arcsec)
1.37
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 67.7340 67.6260 275.7000 276.1000
K0-D0 94.9260 94.7640 255.0000 255.3000
K0-J3 56.5610 56.5590 336.8410 337.1930
G2-D0 39.6690 39.6330 217.7000 218.0000
G2-J3 63.9190 63.8470 44.9430 45.2230
D0-J3 103.3950 103.2870 42.1880 42.4680
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 60902.06328907
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 67.734
HIERARCH ESO ISS PBL12 END 67.626
HIERARCH ESO ISS PBLA12 START 275.7
HIERARCH ESO ISS PBLA12 END 276.1
HIERARCH ESO ISS PBL13 START 94.926
HIERARCH ESO ISS PBL13 END 94.764
HIERARCH ESO ISS PBLA13 START 255.0
HIERARCH ESO ISS PBLA13 END 255.3
HIERARCH ESO ISS PBL14 START 56.561
HIERARCH ESO ISS PBL14 END 56.559
HIERARCH ESO ISS PBLA14 START 336.841
HIERARCH ESO ISS PBLA14 END 337.193
HIERARCH ESO ISS PBL23 START 39.669
HIERARCH ESO ISS PBL23 END 39.633
HIERARCH ESO ISS PBLA23 START 217.7
HIERARCH ESO ISS PBLA23 END 218.0
HIERARCH ESO ISS PBL24 START 63.919
HIERARCH ESO ISS PBL24 END 63.847
HIERARCH ESO ISS PBLA24 START 44.943
HIERARCH ESO ISS PBLA24 END 45.223
HIERARCH ESO ISS PBL34 START 103.395
HIERARCH ESO ISS PBL34 END 103.287
HIERARCH ESO ISS PBLA34 START 42.188
HIERARCH ESO ISS PBLA34 END 42.468
HIERARCH ESO ISS AMBI TAU0 START 0.002504
HIERARCH ESO ISS AMBI TAU0 END 0.002504
HIERARCH ESO ISS AMBI TEMP 11.11
HIERARCH ESO ISS AMBI FWHM START 1.37
HIERARCH ESO ISS AMBI FWHM END 1.37