Exposure
ID
GRAVI.2025-06-23T03:22:48.552_1
Header ID
GRAVI.2025-06-23T03:22:48.552
Date updated
2025-06-23 03:30:52 UTC+0000
Release date
2026-06-23 03:30:52 UTC+0000
UTC Start
2025-06-23 03:22:48.552
UTC End
2025-06-23 03:25:28.552
MJD Start
60849.14083972
MJD End
60849.142691571855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.004540499999999999
Ambient temperature (°C)
11.71
Seeing (arcsec)
0.405
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 66.3980 66.5790 264.3000 264.6000
K0-D0 94.0390 94.2310 243.3000 243.7000
K0-J3 55.7500 55.8090 326.9410 327.1950
G2-D0 39.8760 39.8910 206.8000 207.2000
G2-J3 64.1630 64.2040 33.7560 34.1590
D0-J3 103.8560 103.9120 31.0790 31.4770
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 60849.14083972
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 66.398
HIERARCH ESO ISS PBL12 END 66.579
HIERARCH ESO ISS PBLA12 START 264.3
HIERARCH ESO ISS PBLA12 END 264.6
HIERARCH ESO ISS PBL13 START 94.039
HIERARCH ESO ISS PBL13 END 94.231
HIERARCH ESO ISS PBLA13 START 243.3
HIERARCH ESO ISS PBLA13 END 243.7
HIERARCH ESO ISS PBL14 START 55.75
HIERARCH ESO ISS PBL14 END 55.809
HIERARCH ESO ISS PBLA14 START 326.941
HIERARCH ESO ISS PBLA14 END 327.195
HIERARCH ESO ISS PBL23 START 39.876
HIERARCH ESO ISS PBL23 END 39.891
HIERARCH ESO ISS PBLA23 START 206.8
HIERARCH ESO ISS PBLA23 END 207.2
HIERARCH ESO ISS PBL24 START 64.163
HIERARCH ESO ISS PBL24 END 64.204
HIERARCH ESO ISS PBLA24 START 33.756
HIERARCH ESO ISS PBLA24 END 34.159
HIERARCH ESO ISS PBL34 START 103.856
HIERARCH ESO ISS PBL34 END 103.912
HIERARCH ESO ISS PBLA34 START 31.079
HIERARCH ESO ISS PBLA34 END 31.477
HIERARCH ESO ISS AMBI TAU0 START 0.004287
HIERARCH ESO ISS AMBI TAU0 END 0.004794
HIERARCH ESO ISS AMBI TEMP 11.71
HIERARCH ESO ISS AMBI FWHM START 0.42
HIERARCH ESO ISS AMBI FWHM END 0.39