Exposure
ID
GRAVI.2025-06-22T03:34:33.913_1
Header ID
GRAVI.2025-06-22T03:34:33.913
Date updated
2025-06-22 03:45:38 UTC+0000
Release date
2026-06-22 03:45:38 UTC+0000
UTC Start
2025-06-22 03:34:33.913
UTC End
2025-06-22 03:37:13.913
MJD Start
60848.14900362
MJD End
60848.15085547185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0023275
Ambient temperature (°C)
12.16
Seeing (arcsec)
0.6950000000000001
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 66.8560 67.0140 265.2000 265.6000
K0-D0 94.5250 94.6930 244.4000 244.8000
K0-J3 55.8990 55.9510 327.6190 327.8820
G2-D0 39.9130 39.9260 207.8000 208.2000
G2-J3 64.2670 64.3020 34.8080 35.2010
D0-J3 103.9960 104.0430 32.1200 32.5080
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 60848.14900362
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 66.856
HIERARCH ESO ISS PBL12 END 67.014
HIERARCH ESO ISS PBLA12 START 265.2
HIERARCH ESO ISS PBLA12 END 265.6
HIERARCH ESO ISS PBL13 START 94.525
HIERARCH ESO ISS PBL13 END 94.693
HIERARCH ESO ISS PBLA13 START 244.4
HIERARCH ESO ISS PBLA13 END 244.8
HIERARCH ESO ISS PBL14 START 55.899
HIERARCH ESO ISS PBL14 END 55.951
HIERARCH ESO ISS PBLA14 START 327.619
HIERARCH ESO ISS PBLA14 END 327.882
HIERARCH ESO ISS PBL23 START 39.913
HIERARCH ESO ISS PBL23 END 39.926
HIERARCH ESO ISS PBLA23 START 207.8
HIERARCH ESO ISS PBLA23 END 208.2
HIERARCH ESO ISS PBL24 START 64.267
HIERARCH ESO ISS PBL24 END 64.302
HIERARCH ESO ISS PBLA24 START 34.808
HIERARCH ESO ISS PBLA24 END 35.201
HIERARCH ESO ISS PBL34 START 103.996
HIERARCH ESO ISS PBL34 END 104.043
HIERARCH ESO ISS PBLA34 START 32.12
HIERARCH ESO ISS PBLA34 END 32.508
HIERARCH ESO ISS AMBI TAU0 START 0.002249
HIERARCH ESO ISS AMBI TAU0 END 0.002406
HIERARCH ESO ISS AMBI TEMP 12.16
HIERARCH ESO ISS AMBI FWHM START 0.72
HIERARCH ESO ISS AMBI FWHM END 0.67