Exposure
ID
GRAVI.2025-06-22T03:27:57.897_1
Header ID
GRAVI.2025-06-22T03:27:57.897
Date updated
2025-06-22 03:40:45 UTC+0000
Release date
2026-06-22 03:40:45 UTC+0000
UTC Start
2025-06-22 03:27:57.897
UTC End
2025-06-22 03:30:37.897
MJD Start
60848.1444201
MJD End
60848.14627195185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002483
Ambient temperature (°C)
12.16
Seeing (arcsec)
0.585
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 66.4730 66.6500 264.4000 264.8000
K0-D0 94.1190 94.3060 243.5000 243.9000
K0-J3 55.7750 55.8320 327.0450 327.2970
G2-D0 39.8820 39.8970 206.9000 207.3000
G2-J3 64.1800 64.2210 33.9220 34.3180
D0-J3 103.8790 103.9330 31.2430 31.6350
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 60848.1444201
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 66.473
HIERARCH ESO ISS PBL12 END 66.65
HIERARCH ESO ISS PBLA12 START 264.4
HIERARCH ESO ISS PBLA12 END 264.8
HIERARCH ESO ISS PBL13 START 94.119
HIERARCH ESO ISS PBL13 END 94.306
HIERARCH ESO ISS PBLA13 START 243.5
HIERARCH ESO ISS PBLA13 END 243.9
HIERARCH ESO ISS PBL14 START 55.775
HIERARCH ESO ISS PBL14 END 55.832
HIERARCH ESO ISS PBLA14 START 327.045
HIERARCH ESO ISS PBLA14 END 327.297
HIERARCH ESO ISS PBL23 START 39.882
HIERARCH ESO ISS PBL23 END 39.897
HIERARCH ESO ISS PBLA23 START 206.9
HIERARCH ESO ISS PBLA23 END 207.3
HIERARCH ESO ISS PBL24 START 64.18
HIERARCH ESO ISS PBL24 END 64.221
HIERARCH ESO ISS PBLA24 START 33.922
HIERARCH ESO ISS PBLA24 END 34.318
HIERARCH ESO ISS PBL34 START 103.879
HIERARCH ESO ISS PBL34 END 103.933
HIERARCH ESO ISS PBLA34 START 31.243
HIERARCH ESO ISS PBLA34 END 31.635
HIERARCH ESO ISS AMBI TAU0 START 0.002527
HIERARCH ESO ISS AMBI TAU0 END 0.002439
HIERARCH ESO ISS AMBI TEMP 12.16
HIERARCH ESO ISS AMBI FWHM START 0.56
HIERARCH ESO ISS AMBI FWHM END 0.61