Exposure
ID
GRAVI.2025-06-23T03:32:39.577_1
Header ID
GRAVI.2025-06-23T03:32:39.577
Date updated
2025-06-23 03:41:06 UTC+0000
Release date
2026-06-23 03:41:05 UTC+0000
UTC Start
2025-06-23 03:32:39.577
UTC End
2025-06-23 03:35:19.577
MJD Start
60849.14768029
MJD End
60849.149532141855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.004038
Ambient temperature (°C)
11.54
Seeing (arcsec)
0.46499999999999997
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 66.9640 67.1160 265.5000 265.8000
K0-D0 94.6400 94.8000 244.7000 245.0000
K0-J3 55.9350 55.9850 327.7970 328.0630
G2-D0 39.9220 39.9340 208.0000 208.4000
G2-J3 64.2910 64.3250 35.0750 35.4650
D0-J3 104.0280 104.0730 32.3840 32.7700
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 60849.14768029
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 66.964
HIERARCH ESO ISS PBL12 END 67.116
HIERARCH ESO ISS PBLA12 START 265.5
HIERARCH ESO ISS PBLA12 END 265.8
HIERARCH ESO ISS PBL13 START 94.64
HIERARCH ESO ISS PBL13 END 94.8
HIERARCH ESO ISS PBLA13 START 244.7
HIERARCH ESO ISS PBLA13 END 245.0
HIERARCH ESO ISS PBL14 START 55.935
HIERARCH ESO ISS PBL14 END 55.985
HIERARCH ESO ISS PBLA14 START 327.797
HIERARCH ESO ISS PBLA14 END 328.063
HIERARCH ESO ISS PBL23 START 39.922
HIERARCH ESO ISS PBL23 END 39.934
HIERARCH ESO ISS PBLA23 START 208.0
HIERARCH ESO ISS PBLA23 END 208.4
HIERARCH ESO ISS PBL24 START 64.291
HIERARCH ESO ISS PBL24 END 64.325
HIERARCH ESO ISS PBLA24 START 35.075
HIERARCH ESO ISS PBLA24 END 35.465
HIERARCH ESO ISS PBL34 START 104.028
HIERARCH ESO ISS PBL34 END 104.073
HIERARCH ESO ISS PBLA34 START 32.384
HIERARCH ESO ISS PBLA34 END 32.77
HIERARCH ESO ISS AMBI TAU0 START 0.004072
HIERARCH ESO ISS AMBI TAU0 END 0.004004
HIERARCH ESO ISS AMBI TEMP 11.54
HIERARCH ESO ISS AMBI FWHM START 0.41
HIERARCH ESO ISS AMBI FWHM END 0.52