Exposure
ID
GRAVI.2025-08-23T04:19:17.707_1
Header ID
GRAVI.2025-08-23T04:19:17.707
Date updated
2025-08-23 04:30:42 UTC+0000
Release date
2026-08-23 04:30:42 UTC+0000
UTC Start
2025-08-23 04:19:17.707
UTC End
2025-08-23 04:21:57.707
MJD Start
60910.18006605
MJD End
60910.18191790186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0025885
Ambient temperature (°C)
2.83
Seeing (arcsec)
0.935
Observation
ID
70077
Category
science
Program ID
115.282E.002
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
51990
Name
Y_Sgr
RA
275.344582
DEC
-18.86004
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 B5 J2 J6
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B5 46.2580 46.2540 178.7000 179.2000
A0-J2 88.8320 87.7950 115.4000 116.0000
A0-J6 158.4390 157.9830 37.4900 37.5130
B5-J2 79.6000 78.6370 84.2000 84.3000
B5-J6 196.6520 196.3770 29.0180 29.1130
J2-J6 164.6770 164.7180 5.6430 6.0210
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.002
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60910.18006605
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V Y Sgr
HIERARCH ESO INS SOBJ NAME Y_Sgr
RA 275.344582
DEC -18.86004
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 B5
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 J6
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 46.258
HIERARCH ESO ISS PBL12 END 46.254
HIERARCH ESO ISS PBLA12 START 178.7
HIERARCH ESO ISS PBLA12 END 179.2
HIERARCH ESO ISS PBL13 START 88.832
HIERARCH ESO ISS PBL13 END 87.795
HIERARCH ESO ISS PBLA13 START 115.4
HIERARCH ESO ISS PBLA13 END 116.0
HIERARCH ESO ISS PBL14 START 158.439
HIERARCH ESO ISS PBL14 END 157.983
HIERARCH ESO ISS PBLA14 START 37.49
HIERARCH ESO ISS PBLA14 END 37.513
HIERARCH ESO ISS PBL23 START 79.6
HIERARCH ESO ISS PBL23 END 78.637
HIERARCH ESO ISS PBLA23 START 84.2
HIERARCH ESO ISS PBLA23 END 84.3
HIERARCH ESO ISS PBL24 START 196.652
HIERARCH ESO ISS PBL24 END 196.377
HIERARCH ESO ISS PBLA24 START 29.018
HIERARCH ESO ISS PBLA24 END 29.113
HIERARCH ESO ISS PBL34 START 164.677
HIERARCH ESO ISS PBL34 END 164.718
HIERARCH ESO ISS PBLA34 START 5.643
HIERARCH ESO ISS PBLA34 END 6.021
HIERARCH ESO ISS AMBI TAU0 START 0.002624
HIERARCH ESO ISS AMBI TAU0 END 0.002553
HIERARCH ESO ISS AMBI TEMP 2.83
HIERARCH ESO ISS AMBI FWHM START 0.9
HIERARCH ESO ISS AMBI FWHM END 0.97