Exposure
ID
GRAVI.2025-08-23T04:02:44.664_1
Header ID
GRAVI.2025-08-23T04:02:44.664
Date updated
2025-08-23 04:15:49 UTC+0000
Release date
2026-08-23 04:15:49 UTC+0000
UTC Start
2025-08-23 04:02:44.664
UTC End
2025-08-23 04:05:24.664
MJD Start
60910.1685725
MJD End
60910.170424351854
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0024000000000000002
Ambient temperature (°C)
2.96
Seeing (arcsec)
0.95
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 46.3040 46.2920 176.1000 176.6000
A0-J2 94.5350 93.5370 112.5000 113.0000
A0-J6 160.8310 160.4270 37.2710 37.3200
B5-J2 84.7800 83.8860 83.2000 83.4000
B5-J6 198.0510 197.8190 28.4170 28.5330
J2-J6 164.4930 164.5200 3.5030 3.8860
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 60910.1685725
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 46.304
HIERARCH ESO ISS PBL12 END 46.292
HIERARCH ESO ISS PBLA12 START 176.1
HIERARCH ESO ISS PBLA12 END 176.6
HIERARCH ESO ISS PBL13 START 94.535
HIERARCH ESO ISS PBL13 END 93.537
HIERARCH ESO ISS PBLA13 START 112.5
HIERARCH ESO ISS PBLA13 END 113.0
HIERARCH ESO ISS PBL14 START 160.831
HIERARCH ESO ISS PBL14 END 160.427
HIERARCH ESO ISS PBLA14 START 37.271
HIERARCH ESO ISS PBLA14 END 37.32
HIERARCH ESO ISS PBL23 START 84.78
HIERARCH ESO ISS PBL23 END 83.886
HIERARCH ESO ISS PBLA23 START 83.2
HIERARCH ESO ISS PBLA23 END 83.4
HIERARCH ESO ISS PBL24 START 198.051
HIERARCH ESO ISS PBL24 END 197.819
HIERARCH ESO ISS PBLA24 START 28.417
HIERARCH ESO ISS PBLA24 END 28.533
HIERARCH ESO ISS PBL34 START 164.493
HIERARCH ESO ISS PBL34 END 164.52
HIERARCH ESO ISS PBLA34 START 3.503
HIERARCH ESO ISS PBLA34 END 3.886
HIERARCH ESO ISS AMBI TAU0 START 0.002488
HIERARCH ESO ISS AMBI TAU0 END 0.002312
HIERARCH ESO ISS AMBI TEMP 2.96
HIERARCH ESO ISS AMBI FWHM START 0.96
HIERARCH ESO ISS AMBI FWHM END 0.94