Exposure
ID
GRAVI.2025-07-14T05:23:19.252_1
Header ID
GRAVI.2025-07-14T05:23:19.252
Date updated
2025-07-14 05:35:50 UTC+0000
Release date
2026-07-14 05:35:50 UTC+0000
UTC Start
2025-07-14 05:23:19.252
UTC End
2025-07-14 05:25:59.252
MJD Start
60870.22452838
MJD End
60870.226380231856
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002687
Ambient temperature (°C)
13.39
Seeing (arcsec)
1.31
Observation
ID
68755
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
51158
Name
X_Sgr
RA
266.88755
DEC
-27.83085
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 82.6900 82.4020 136.8000 137.3000
A0-J2 111.4430 110.7440 111.6000 112.1000
A0-C1 20.6690 20.5970 136.7710 137.3310
G1-J2 50.6970 50.3910 67.8000 68.0000
G1-C1 62.0210 61.8050 316.7540 317.3140
J2-C1 93.1460 92.5250 286.2310 286.6880
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 60870.22452838
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V X Sgr
HIERARCH ESO INS SOBJ NAME X_Sgr
RA 266.88755
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 A0
HIERARCH ESO ISS CONF STATION2 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 82.69
HIERARCH ESO ISS PBL12 END 82.402
HIERARCH ESO ISS PBLA12 START 136.8
HIERARCH ESO ISS PBLA12 END 137.3
HIERARCH ESO ISS PBL13 START 111.443
HIERARCH ESO ISS PBL13 END 110.744
HIERARCH ESO ISS PBLA13 START 111.6
HIERARCH ESO ISS PBLA13 END 112.1
HIERARCH ESO ISS PBL14 START 20.669
HIERARCH ESO ISS PBL14 END 20.597
HIERARCH ESO ISS PBLA14 START 136.771
HIERARCH ESO ISS PBLA14 END 137.331
HIERARCH ESO ISS PBL23 START 50.697
HIERARCH ESO ISS PBL23 END 50.391
HIERARCH ESO ISS PBLA23 START 67.8
HIERARCH ESO ISS PBLA23 END 68.0
HIERARCH ESO ISS PBL24 START 62.021
HIERARCH ESO ISS PBL24 END 61.805
HIERARCH ESO ISS PBLA24 START 316.754
HIERARCH ESO ISS PBLA24 END 317.314
HIERARCH ESO ISS PBL34 START 93.146
HIERARCH ESO ISS PBL34 END 92.525
HIERARCH ESO ISS PBLA34 START 286.231
HIERARCH ESO ISS PBLA34 END 286.688
HIERARCH ESO ISS AMBI TAU0 START 0.002687
HIERARCH ESO ISS AMBI TAU0 END 0.002687
HIERARCH ESO ISS AMBI TEMP 13.39
HIERARCH ESO ISS AMBI FWHM START 1.31
HIERARCH ESO ISS AMBI FWHM END 1.31