Exposure
ID
GRAVI.2025-04-03T08:46:15.189_1
Header ID
GRAVI.2025-04-03T08:46:15.189
Date updated
2025-04-03 08:56:44 UTC+0000
Release date
2026-04-03 08:56:43 UTC+0000
UTC Start
2025-04-03 08:46:15.189
UTC End
2025-04-03 08:48:55.189
MJD Start
60768.36545358
MJD End
60768.36730543186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.006851
Ambient temperature (°C)
13.8
Seeing (arcsec)
0.43
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 24.8620 24.8980 137.0000 137.2000
A0-D0 31.4640 31.5220 64.0000 64.4000
A0-J3 131.6300 131.7310 39.0710 39.4720
B2-D0 33.9140 33.9180 19.5000 19.9000
B2-J3 137.2780 137.3300 28.7380 29.1240
D0-J3 103.9480 103.9980 31.7480 32.1320
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 60768.36545358
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 24.862
HIERARCH ESO ISS PBL12 END 24.898
HIERARCH ESO ISS PBLA12 START 137.0
HIERARCH ESO ISS PBLA12 END 137.2
HIERARCH ESO ISS PBL13 START 31.464
HIERARCH ESO ISS PBL13 END 31.522
HIERARCH ESO ISS PBLA13 START 64.0
HIERARCH ESO ISS PBLA13 END 64.4
HIERARCH ESO ISS PBL14 START 131.63
HIERARCH ESO ISS PBL14 END 131.731
HIERARCH ESO ISS PBLA14 START 39.071
HIERARCH ESO ISS PBLA14 END 39.472
HIERARCH ESO ISS PBL23 START 33.914
HIERARCH ESO ISS PBL23 END 33.918
HIERARCH ESO ISS PBLA23 START 19.5
HIERARCH ESO ISS PBLA23 END 19.9
HIERARCH ESO ISS PBL24 START 137.278
HIERARCH ESO ISS PBL24 END 137.33
HIERARCH ESO ISS PBLA24 START 28.738
HIERARCH ESO ISS PBLA24 END 29.124
HIERARCH ESO ISS PBL34 START 103.948
HIERARCH ESO ISS PBL34 END 103.998
HIERARCH ESO ISS PBLA34 START 31.748
HIERARCH ESO ISS PBLA34 END 32.132
HIERARCH ESO ISS AMBI TAU0 START 0.006851
HIERARCH ESO ISS AMBI TAU0 END 0.006851
HIERARCH ESO ISS AMBI TEMP 13.8
HIERARCH ESO ISS AMBI FWHM START 0.43
HIERARCH ESO ISS AMBI FWHM END 0.43