Exposure
ID
GRAVI.2025-08-23T04:09:26.681_1
Header ID
GRAVI.2025-08-23T04:09:26.681
Date updated
2025-08-23 04:20:49 UTC+0000
Release date
2026-08-23 04:20:49 UTC+0000
UTC Start
2025-08-23 04:09:26.681
UTC End
2025-08-23 04:12:06.681
MJD Start
60910.17322548
MJD End
60910.175077331856
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002551
Ambient temperature (°C)
2.87
Seeing (arcsec)
0.875
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 46.2800 46.2710 177.2000 177.6000
A0-J2 92.2680 91.2470 113.6000 114.2000
A0-J6 159.9030 159.4750 37.3760 37.4160
B5-J2 82.7430 81.8160 83.6000 83.8000
B5-J6 197.5170 197.2670 28.6730 28.7810
J2-J6 164.5580 164.5910 4.3670 4.7510
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 60910.17322548
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 46.28
HIERARCH ESO ISS PBL12 END 46.271
HIERARCH ESO ISS PBLA12 START 177.2
HIERARCH ESO ISS PBLA12 END 177.6
HIERARCH ESO ISS PBL13 START 92.268
HIERARCH ESO ISS PBL13 END 91.247
HIERARCH ESO ISS PBLA13 START 113.6
HIERARCH ESO ISS PBLA13 END 114.2
HIERARCH ESO ISS PBL14 START 159.903
HIERARCH ESO ISS PBL14 END 159.475
HIERARCH ESO ISS PBLA14 START 37.376
HIERARCH ESO ISS PBLA14 END 37.416
HIERARCH ESO ISS PBL23 START 82.743
HIERARCH ESO ISS PBL23 END 81.816
HIERARCH ESO ISS PBLA23 START 83.6
HIERARCH ESO ISS PBLA23 END 83.8
HIERARCH ESO ISS PBL24 START 197.517
HIERARCH ESO ISS PBL24 END 197.267
HIERARCH ESO ISS PBLA24 START 28.673
HIERARCH ESO ISS PBLA24 END 28.781
HIERARCH ESO ISS PBL34 START 164.558
HIERARCH ESO ISS PBL34 END 164.591
HIERARCH ESO ISS PBLA34 START 4.367
HIERARCH ESO ISS PBLA34 END 4.751
HIERARCH ESO ISS AMBI TAU0 START 0.002551
HIERARCH ESO ISS AMBI TAU0 END 0.002551
HIERARCH ESO ISS AMBI TEMP 2.87
HIERARCH ESO ISS AMBI FWHM START 0.85
HIERARCH ESO ISS AMBI FWHM END 0.9