Exposure
ID
GRAVI.2025-08-25T23:35:48.226_1
Header ID
GRAVI.2025-08-25T23:35:48.226
Date updated
2025-08-25 23:45:56 UTC+0000
Release date
2026-08-25 23:45:56 UTC+0000
UTC Start
2025-08-25 23:35:48.226
UTC End
2025-08-25 23:38:28.226
MJD Start
60912.98319706
MJD End
60912.985048911854
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.003913
Ambient temperature (°C)
11.95
Seeing (arcsec)
0.8400000000000001
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 48.5550 48.5760 145.5000 145.7000
A0-J2 123.9420 124.3790 87.0000 87.3000
A0-J6 166.2660 166.3950 18.0860 18.4600
B5-J2 106.8750 107.2370 64.3000 64.6000
B5-J6 199.5280 199.5740 6.9420 7.2870
J2-J6 167.9490 167.9610 334.5570 334.7870
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 60912.98319706
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 48.555
HIERARCH ESO ISS PBL12 END 48.576
HIERARCH ESO ISS PBLA12 START 145.5
HIERARCH ESO ISS PBLA12 END 145.7
HIERARCH ESO ISS PBL13 START 123.942
HIERARCH ESO ISS PBL13 END 124.379
HIERARCH ESO ISS PBLA13 START 87.0
HIERARCH ESO ISS PBLA13 END 87.3
HIERARCH ESO ISS PBL14 START 166.266
HIERARCH ESO ISS PBL14 END 166.395
HIERARCH ESO ISS PBLA14 START 18.086
HIERARCH ESO ISS PBLA14 END 18.46
HIERARCH ESO ISS PBL23 START 106.875
HIERARCH ESO ISS PBL23 END 107.237
HIERARCH ESO ISS PBLA23 START 64.3
HIERARCH ESO ISS PBLA23 END 64.6
HIERARCH ESO ISS PBL24 START 199.528
HIERARCH ESO ISS PBL24 END 199.574
HIERARCH ESO ISS PBLA24 START 6.942
HIERARCH ESO ISS PBLA24 END 7.287
HIERARCH ESO ISS PBL34 START 167.949
HIERARCH ESO ISS PBL34 END 167.961
HIERARCH ESO ISS PBLA34 START 334.557
HIERARCH ESO ISS PBLA34 END 334.787
HIERARCH ESO ISS AMBI TAU0 START 0.004063
HIERARCH ESO ISS AMBI TAU0 END 0.003763
HIERARCH ESO ISS AMBI TEMP 11.95
HIERARCH ESO ISS AMBI FWHM START 0.76
HIERARCH ESO ISS AMBI FWHM END 0.92