Exposure
ID
GRAVI.2025-07-14T05:33:16.277_1
Header ID
GRAVI.2025-07-14T05:33:16.277
Date updated
2025-07-14 05:45:52 UTC+0000
Release date
2026-07-14 05:45:52 UTC+0000
UTC Start
2025-07-14 05:33:16.277
UTC End
2025-07-14 05:35:56.277
MJD Start
60870.23143839
MJD End
60870.23329024186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002687
Ambient temperature (°C)
13.05
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 81.7140 81.4180 138.7000 139.3000
A0-J2 109.0550 108.3190 113.3000 113.8000
A0-C1 20.4250 20.3520 138.6800 139.2660
G1-J2 49.6450 49.3180 68.5000 68.7000
G1-C1 61.2880 61.0670 318.6630 319.2490
J2-C1 91.0210 90.3650 287.7950 288.2770
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 60870.23143839
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 81.714
HIERARCH ESO ISS PBL12 END 81.418
HIERARCH ESO ISS PBLA12 START 138.7
HIERARCH ESO ISS PBLA12 END 139.3
HIERARCH ESO ISS PBL13 START 109.055
HIERARCH ESO ISS PBL13 END 108.319
HIERARCH ESO ISS PBLA13 START 113.3
HIERARCH ESO ISS PBLA13 END 113.8
HIERARCH ESO ISS PBL14 START 20.425
HIERARCH ESO ISS PBL14 END 20.352
HIERARCH ESO ISS PBLA14 START 138.68
HIERARCH ESO ISS PBLA14 END 139.266
HIERARCH ESO ISS PBL23 START 49.645
HIERARCH ESO ISS PBL23 END 49.318
HIERARCH ESO ISS PBLA23 START 68.5
HIERARCH ESO ISS PBLA23 END 68.7
HIERARCH ESO ISS PBL24 START 61.288
HIERARCH ESO ISS PBL24 END 61.067
HIERARCH ESO ISS PBLA24 START 318.663
HIERARCH ESO ISS PBLA24 END 319.249
HIERARCH ESO ISS PBL34 START 91.021
HIERARCH ESO ISS PBL34 END 90.365
HIERARCH ESO ISS PBLA34 START 287.795
HIERARCH ESO ISS PBLA34 END 288.277
HIERARCH ESO ISS AMBI TAU0 START 0.002687
HIERARCH ESO ISS AMBI TAU0 END 0.002687
HIERARCH ESO ISS AMBI TEMP 13.05
HIERARCH ESO ISS AMBI FWHM START 1.31
HIERARCH ESO ISS AMBI FWHM END 1.31