Exposure
ID
GRAVI.2025-07-24T04:49:04.556_1
Header ID
GRAVI.2025-07-24T04:49:04.556
Date updated
2025-07-24 05:00:45 UTC+0000
Release date
2026-07-24 05:00:45 UTC+0000
UTC Start
2025-07-24 04:49:04.556
UTC End
2025-07-24 04:51:44.556
MJD Start
60880.20074718
MJD End
60880.20259903186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.005408
Ambient temperature (°C)
12.84
Seeing (arcsec)
0.36
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 82.1950 81.9010 137.7000 138.3000
A0-J2 110.2380 109.5180 112.5000 113.0000
A0-C1 20.5460 20.4730 137.7380 138.3130
G1-J2 50.1690 49.8510 68.2000 68.4000
G1-C1 61.6490 61.4290 317.7200 318.2950
J2-C1 92.0750 91.4340 287.0210 287.4930
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 60880.20074718
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 82.195
HIERARCH ESO ISS PBL12 END 81.901
HIERARCH ESO ISS PBLA12 START 137.7
HIERARCH ESO ISS PBLA12 END 138.3
HIERARCH ESO ISS PBL13 START 110.238
HIERARCH ESO ISS PBL13 END 109.518
HIERARCH ESO ISS PBLA13 START 112.5
HIERARCH ESO ISS PBLA13 END 113.0
HIERARCH ESO ISS PBL14 START 20.546
HIERARCH ESO ISS PBL14 END 20.473
HIERARCH ESO ISS PBLA14 START 137.738
HIERARCH ESO ISS PBLA14 END 138.313
HIERARCH ESO ISS PBL23 START 50.169
HIERARCH ESO ISS PBL23 END 49.851
HIERARCH ESO ISS PBLA23 START 68.2
HIERARCH ESO ISS PBLA23 END 68.4
HIERARCH ESO ISS PBL24 START 61.649
HIERARCH ESO ISS PBL24 END 61.429
HIERARCH ESO ISS PBLA24 START 317.72
HIERARCH ESO ISS PBLA24 END 318.295
HIERARCH ESO ISS PBL34 START 92.075
HIERARCH ESO ISS PBL34 END 91.434
HIERARCH ESO ISS PBLA34 START 287.021
HIERARCH ESO ISS PBLA34 END 287.493
HIERARCH ESO ISS AMBI TAU0 START 0.005054
HIERARCH ESO ISS AMBI TAU0 END 0.005762
HIERARCH ESO ISS AMBI TEMP 12.84
HIERARCH ESO ISS AMBI FWHM START 0.36
HIERARCH ESO ISS AMBI FWHM END 0.36