Exposure
ID
GRAVI.2025-08-15T01:47:50.218_1
Header ID
GRAVI.2025-08-15T01:47:50.218
Date updated
2025-08-15 02:00:55 UTC+0000
Release date
2026-08-15 02:00:55 UTC+0000
UTC Start
2025-08-15 01:47:50.218
UTC End
2025-08-15 01:50:30.218
MJD Start
60902.07488678
MJD End
60902.076738631855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002645
Ambient temperature (°C)
11.35
Seeing (arcsec)
0.965
Observation
ID
70010
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
51942
Name
X_Sgr
RA
266.890063
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 67.0100 66.8530 277.8000 278.1000
K0-D0 93.8530 93.6230 256.8000 257.1000
K0-J3 56.5340 56.5260 338.8640 339.2330
G2-D0 39.4340 39.3850 219.3000 219.5000
G2-J3 63.4500 63.3500 46.4850 46.7480
D0-J3 102.6920 102.5430 43.7230 43.9840
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 60902.07488678
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V X Sgr
HIERARCH ESO INS SOBJ NAME X_Sgr
RA 266.890063
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 67.01
HIERARCH ESO ISS PBL12 END 66.853
HIERARCH ESO ISS PBLA12 START 277.8
HIERARCH ESO ISS PBLA12 END 278.1
HIERARCH ESO ISS PBL13 START 93.853
HIERARCH ESO ISS PBL13 END 93.623
HIERARCH ESO ISS PBLA13 START 256.8
HIERARCH ESO ISS PBLA13 END 257.1
HIERARCH ESO ISS PBL14 START 56.534
HIERARCH ESO ISS PBL14 END 56.526
HIERARCH ESO ISS PBLA14 START 338.864
HIERARCH ESO ISS PBLA14 END 339.233
HIERARCH ESO ISS PBL23 START 39.434
HIERARCH ESO ISS PBL23 END 39.385
HIERARCH ESO ISS PBLA23 START 219.3
HIERARCH ESO ISS PBLA23 END 219.5
HIERARCH ESO ISS PBL24 START 63.45
HIERARCH ESO ISS PBL24 END 63.35
HIERARCH ESO ISS PBLA24 START 46.485
HIERARCH ESO ISS PBLA24 END 46.748
HIERARCH ESO ISS PBL34 START 102.692
HIERARCH ESO ISS PBL34 END 102.543
HIERARCH ESO ISS PBLA34 START 43.723
HIERARCH ESO ISS PBLA34 END 43.984
HIERARCH ESO ISS AMBI TAU0 START 0.002645
HIERARCH ESO ISS AMBI TAU0 END 0.002645
HIERARCH ESO ISS AMBI TEMP 11.35
HIERARCH ESO ISS AMBI FWHM START 0.99
HIERARCH ESO ISS AMBI FWHM END 0.94