Exposure
ID
GRAVI.2025-05-22T06:03:56.039_1
Header ID
GRAVI.2025-05-22T06:03:56.039
Date updated
2025-05-22 06:16:07 UTC+0000
Release date
2026-05-22 06:16:07 UTC+0000
UTC Start
2025-05-22 06:03:56.039
UTC End
2025-05-22 06:06:36.039
MJD Start
60817.25273193
MJD End
60817.254583781854
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.010360000000000001
Ambient temperature (°C)
14.57
Seeing (arcsec)
0.4
Observation
ID
67519
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
50218
Name
X_Sgr
RA
266.890065
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 67.9830 68.0600 268.5000 268.8000
K0-D0 95.6930 95.7660 247.9000 248.3000
K0-J3 56.2890 56.3200 330.1620 330.4520
G2-D0 39.9860 39.9870 211.2000 211.5000
G2-J3 64.4900 64.4990 38.2800 38.6350
D0-J3 104.2860 104.2960 35.5620 35.9150
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 60817.25273193
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V X Sgr
HIERARCH ESO INS SOBJ NAME X_Sgr
RA 266.890065
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 67.983
HIERARCH ESO ISS PBL12 END 68.06
HIERARCH ESO ISS PBLA12 START 268.5
HIERARCH ESO ISS PBLA12 END 268.8
HIERARCH ESO ISS PBL13 START 95.693
HIERARCH ESO ISS PBL13 END 95.766
HIERARCH ESO ISS PBLA13 START 247.9
HIERARCH ESO ISS PBLA13 END 248.3
HIERARCH ESO ISS PBL14 START 56.289
HIERARCH ESO ISS PBL14 END 56.32
HIERARCH ESO ISS PBLA14 START 330.162
HIERARCH ESO ISS PBLA14 END 330.452
HIERARCH ESO ISS PBL23 START 39.986
HIERARCH ESO ISS PBL23 END 39.987
HIERARCH ESO ISS PBLA23 START 211.2
HIERARCH ESO ISS PBLA23 END 211.5
HIERARCH ESO ISS PBL24 START 64.49
HIERARCH ESO ISS PBL24 END 64.499
HIERARCH ESO ISS PBLA24 START 38.28
HIERARCH ESO ISS PBLA24 END 38.635
HIERARCH ESO ISS PBL34 START 104.286
HIERARCH ESO ISS PBL34 END 104.296
HIERARCH ESO ISS PBLA34 START 35.562
HIERARCH ESO ISS PBLA34 END 35.915
HIERARCH ESO ISS AMBI TAU0 START 0.009634
HIERARCH ESO ISS AMBI TAU0 END 0.011086
HIERARCH ESO ISS AMBI TEMP 14.57
HIERARCH ESO ISS AMBI FWHM START 0.42
HIERARCH ESO ISS AMBI FWHM END 0.38