Exposure
ID
GRAVI.2025-08-23T04:12:41.690_1
Header ID
GRAVI.2025-08-23T04:12:41.690
Date updated
2025-08-23 04:25:53 UTC+0000
Release date
2026-08-23 04:25:53 UTC+0000
UTC Start
2025-08-23 04:12:41.690
UTC End
2025-08-23 04:15:21.690
MJD Start
60910.17548252
MJD End
60910.17733437185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002458
Ambient temperature (°C)
2.84
Seeing (arcsec)
0.915
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 46.2710 46.2640 177.7000 178.1000
A0-J2 91.1430 90.1200 114.2000 114.8000
A0-J6 159.4310 158.9960 37.4190 37.4530
B5-J2 81.7210 80.7850 83.8000 84.0000
B5-J6 197.2410 196.9840 28.7910 28.8950
J2-J6 164.5940 164.6300 4.7890 5.1700
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 60910.17548252
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 46.271
HIERARCH ESO ISS PBL12 END 46.264
HIERARCH ESO ISS PBLA12 START 177.7
HIERARCH ESO ISS PBLA12 END 178.1
HIERARCH ESO ISS PBL13 START 91.143
HIERARCH ESO ISS PBL13 END 90.12
HIERARCH ESO ISS PBLA13 START 114.2
HIERARCH ESO ISS PBLA13 END 114.8
HIERARCH ESO ISS PBL14 START 159.431
HIERARCH ESO ISS PBL14 END 158.996
HIERARCH ESO ISS PBLA14 START 37.419
HIERARCH ESO ISS PBLA14 END 37.453
HIERARCH ESO ISS PBL23 START 81.721
HIERARCH ESO ISS PBL23 END 80.785
HIERARCH ESO ISS PBLA23 START 83.8
HIERARCH ESO ISS PBLA23 END 84.0
HIERARCH ESO ISS PBL24 START 197.241
HIERARCH ESO ISS PBL24 END 196.984
HIERARCH ESO ISS PBLA24 START 28.791
HIERARCH ESO ISS PBLA24 END 28.895
HIERARCH ESO ISS PBL34 START 164.594
HIERARCH ESO ISS PBL34 END 164.63
HIERARCH ESO ISS PBLA34 START 4.789
HIERARCH ESO ISS PBLA34 END 5.17
HIERARCH ESO ISS AMBI TAU0 START 0.002458
HIERARCH ESO ISS AMBI TAU0 END 0.002458
HIERARCH ESO ISS AMBI TEMP 2.84
HIERARCH ESO ISS AMBI FWHM START 0.96
HIERARCH ESO ISS AMBI FWHM END 0.87