Exposure
ID
GRAVI.2025-07-14T05:30:01.269_1
Header ID
GRAVI.2025-07-14T05:30:01.269
Date updated
2025-07-14 05:41:19 UTC+0000
Release date
2026-07-14 05:41:19 UTC+0000
UTC Start
2025-07-14 05:30:01.269
UTC End
2025-07-14 05:32:41.269
MJD Start
60870.22918135
MJD End
60870.23103320185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002687
Ambient temperature (°C)
13.18
Seeing (arcsec)
1.31
Observation
ID
68755
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
51158
Name
X_Sgr
RA
266.88755
DEC
-27.83085
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 82.0320 81.7400 138.0000 138.6000
A0-J2 109.8410 109.1200 112.8000 113.3000
A0-C1 20.5050 20.4320 138.0530 138.6280
G1-J2 49.9940 49.6750 68.3000 68.5000
G1-C1 61.5270 61.3080 318.0360 318.6110
J2-C1 91.7220 91.0790 287.2810 287.7520
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 60870.22918135
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V X Sgr
HIERARCH ESO INS SOBJ NAME X_Sgr
RA 266.88755
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 A0
HIERARCH ESO ISS CONF STATION2 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 82.032
HIERARCH ESO ISS PBL12 END 81.74
HIERARCH ESO ISS PBLA12 START 138.0
HIERARCH ESO ISS PBLA12 END 138.6
HIERARCH ESO ISS PBL13 START 109.841
HIERARCH ESO ISS PBL13 END 109.12
HIERARCH ESO ISS PBLA13 START 112.8
HIERARCH ESO ISS PBLA13 END 113.3
HIERARCH ESO ISS PBL14 START 20.505
HIERARCH ESO ISS PBL14 END 20.432
HIERARCH ESO ISS PBLA14 START 138.053
HIERARCH ESO ISS PBLA14 END 138.628
HIERARCH ESO ISS PBL23 START 49.994
HIERARCH ESO ISS PBL23 END 49.675
HIERARCH ESO ISS PBLA23 START 68.3
HIERARCH ESO ISS PBLA23 END 68.5
HIERARCH ESO ISS PBL24 START 61.527
HIERARCH ESO ISS PBL24 END 61.308
HIERARCH ESO ISS PBLA24 START 318.036
HIERARCH ESO ISS PBLA24 END 318.611
HIERARCH ESO ISS PBL34 START 91.722
HIERARCH ESO ISS PBL34 END 91.079
HIERARCH ESO ISS PBLA34 START 287.281
HIERARCH ESO ISS PBLA34 END 287.752
HIERARCH ESO ISS AMBI TAU0 START 0.002687
HIERARCH ESO ISS AMBI TAU0 END 0.002687
HIERARCH ESO ISS AMBI TEMP 13.18
HIERARCH ESO ISS AMBI FWHM START 1.31
HIERARCH ESO ISS AMBI FWHM END 1.31