Exposure
ID
GRAVI.2025-06-23T03:26:00.560_1
Header ID
GRAVI.2025-06-23T03:26:00.560
Date updated
2025-06-23 03:35:59 UTC+0000
Release date
2026-06-23 03:35:59 UTC+0000
UTC Start
2025-06-23 03:26:00.560
UTC End
2025-06-23 03:28:40.560
MJD Start
60849.14306204
MJD End
60849.144913891854
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0041575
Ambient temperature (°C)
11.64
Seeing (arcsec)
0.42000000000000004
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 66.5920 66.7640 264.7000 265.0000
K0-D0 94.2460 94.4280 243.8000 244.2000
K0-J3 55.8130 55.8690 327.2160 327.4740
G2-D0 39.8920 39.9060 207.2000 207.6000
G2-J3 64.2080 64.2470 34.1900 34.5880
D0-J3 103.9160 103.9680 31.5080 31.9020
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 60849.14306204
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 66.592
HIERARCH ESO ISS PBL12 END 66.764
HIERARCH ESO ISS PBLA12 START 264.7
HIERARCH ESO ISS PBLA12 END 265.0
HIERARCH ESO ISS PBL13 START 94.246
HIERARCH ESO ISS PBL13 END 94.428
HIERARCH ESO ISS PBLA13 START 243.8
HIERARCH ESO ISS PBLA13 END 244.2
HIERARCH ESO ISS PBL14 START 55.813
HIERARCH ESO ISS PBL14 END 55.869
HIERARCH ESO ISS PBLA14 START 327.216
HIERARCH ESO ISS PBLA14 END 327.474
HIERARCH ESO ISS PBL23 START 39.892
HIERARCH ESO ISS PBL23 END 39.906
HIERARCH ESO ISS PBLA23 START 207.2
HIERARCH ESO ISS PBLA23 END 207.6
HIERARCH ESO ISS PBL24 START 64.208
HIERARCH ESO ISS PBL24 END 64.247
HIERARCH ESO ISS PBLA24 START 34.19
HIERARCH ESO ISS PBLA24 END 34.588
HIERARCH ESO ISS PBL34 START 103.916
HIERARCH ESO ISS PBL34 END 103.968
HIERARCH ESO ISS PBLA34 START 31.508
HIERARCH ESO ISS PBLA34 END 31.902
HIERARCH ESO ISS AMBI TAU0 START 0.004794
HIERARCH ESO ISS AMBI TAU0 END 0.003521
HIERARCH ESO ISS AMBI TEMP 11.64
HIERARCH ESO ISS AMBI FWHM START 0.39
HIERARCH ESO ISS AMBI FWHM END 0.45