Exposure
ID
GRAVI.2025-06-20T03:32:24.570_1
Header ID
GRAVI.2025-06-20T03:32:24.570
Date updated
2025-06-20 03:40:44 UTC+0000
Release date
2026-06-20 03:40:44 UTC+0000
UTC Start
2025-06-20 03:32:24.570
UTC End
2025-06-20 03:35:04.570
MJD Start
60846.1475066
MJD End
60846.149358451854
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.004557
Ambient temperature (°C)
13.12
Seeing (arcsec)
0.745
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 66.2560 66.4430 264.0000 264.4000
K0-D0 93.8880 94.0870 243.0000 243.4000
K0-J3 55.7050 55.7650 326.7490 327.0010
G2-D0 39.8640 39.8790 206.5000 206.9000
G2-J3 64.1310 64.1740 33.4490 33.8530
D0-J3 103.8120 103.8700 30.7740 31.1750
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 60846.1475066
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 66.256
HIERARCH ESO ISS PBL12 END 66.443
HIERARCH ESO ISS PBLA12 START 264.0
HIERARCH ESO ISS PBLA12 END 264.4
HIERARCH ESO ISS PBL13 START 93.888
HIERARCH ESO ISS PBL13 END 94.087
HIERARCH ESO ISS PBLA13 START 243.0
HIERARCH ESO ISS PBLA13 END 243.4
HIERARCH ESO ISS PBL14 START 55.705
HIERARCH ESO ISS PBL14 END 55.765
HIERARCH ESO ISS PBLA14 START 326.749
HIERARCH ESO ISS PBLA14 END 327.001
HIERARCH ESO ISS PBL23 START 39.864
HIERARCH ESO ISS PBL23 END 39.879
HIERARCH ESO ISS PBLA23 START 206.5
HIERARCH ESO ISS PBLA23 END 206.9
HIERARCH ESO ISS PBL24 START 64.131
HIERARCH ESO ISS PBL24 END 64.174
HIERARCH ESO ISS PBLA24 START 33.449
HIERARCH ESO ISS PBLA24 END 33.853
HIERARCH ESO ISS PBL34 START 103.812
HIERARCH ESO ISS PBL34 END 103.87
HIERARCH ESO ISS PBLA34 START 30.774
HIERARCH ESO ISS PBLA34 END 31.175
HIERARCH ESO ISS AMBI TAU0 START 0.00487
HIERARCH ESO ISS AMBI TAU0 END 0.004244
HIERARCH ESO ISS AMBI TEMP 13.12
HIERARCH ESO ISS AMBI FWHM START 0.7
HIERARCH ESO ISS AMBI FWHM END 0.79