Exposure
ID
GRAVI.2025-04-03T08:42:57.181_1
Header ID
GRAVI.2025-04-03T08:42:57.181
Date updated
2025-04-03 08:51:16 UTC+0000
Release date
2026-04-03 08:51:16 UTC+0000
UTC Start
2025-04-03 08:42:57.181
UTC End
2025-04-03 08:45:37.181
MJD Start
60768.36316182
MJD End
60768.36501367186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.00702
Ambient temperature (°C)
13.84
Seeing (arcsec)
0.41000000000000003
Observation
ID
66021
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
49146
Name
X_Sgr
RA
266.888808
DEC
-27.83085
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 B2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B2 24.8210 24.8590 136.7000 137.0000
A0-D0 31.3950 31.4570 63.6000 64.0000
A0-J3 131.5110 131.6190 38.6250 39.0300
B2-D0 33.9080 33.9130 19.1000 19.5000
B2-J3 137.2170 137.2730 28.3080 28.6980
D0-J3 103.8880 103.9420 31.3060 31.7010
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 60768.36316182
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V X Sgr
HIERARCH ESO INS SOBJ NAME X_Sgr
RA 266.888808
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 B2
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 24.821
HIERARCH ESO ISS PBL12 END 24.859
HIERARCH ESO ISS PBLA12 START 136.7
HIERARCH ESO ISS PBLA12 END 137.0
HIERARCH ESO ISS PBL13 START 31.395
HIERARCH ESO ISS PBL13 END 31.457
HIERARCH ESO ISS PBLA13 START 63.6
HIERARCH ESO ISS PBLA13 END 64.0
HIERARCH ESO ISS PBL14 START 131.511
HIERARCH ESO ISS PBL14 END 131.619
HIERARCH ESO ISS PBLA14 START 38.625
HIERARCH ESO ISS PBLA14 END 39.03
HIERARCH ESO ISS PBL23 START 33.908
HIERARCH ESO ISS PBL23 END 33.913
HIERARCH ESO ISS PBLA23 START 19.1
HIERARCH ESO ISS PBLA23 END 19.5
HIERARCH ESO ISS PBL24 START 137.217
HIERARCH ESO ISS PBL24 END 137.273
HIERARCH ESO ISS PBLA24 START 28.308
HIERARCH ESO ISS PBLA24 END 28.698
HIERARCH ESO ISS PBL34 START 103.888
HIERARCH ESO ISS PBL34 END 103.942
HIERARCH ESO ISS PBLA34 START 31.306
HIERARCH ESO ISS PBLA34 END 31.701
HIERARCH ESO ISS AMBI TAU0 START 0.007189
HIERARCH ESO ISS AMBI TAU0 END 0.006851
HIERARCH ESO ISS AMBI TEMP 13.84
HIERARCH ESO ISS AMBI FWHM START 0.39
HIERARCH ESO ISS AMBI FWHM END 0.43