Exposure
ID
GRAVI.2025-08-14T02:08:27.430_1
Header ID
GRAVI.2025-08-14T02:08:27.430
Date updated
2025-08-14 02:20:45 UTC+0000
Release date
2026-08-14 02:20:44 UTC+0000
UTC Start
2025-08-14 02:08:27.430
UTC End
2025-08-14 02:11:07.430
MJD Start
60901.08920636
MJD End
60901.09105821185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.006261
Ambient temperature (°C)
14.15
Seeing (arcsec)
0.815
Observation
ID
69981
Category
science
Program ID
115.282E.001
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
51923
Name
Y_Oph
RA
268.160118
DEC
-6.1436
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
K0 B2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-B2 121.9130 121.7870 243.0000 243.1000
K0-D0 94.7300 94.5330 253.5000 253.6000
K0-J3 52.0270 51.9230 338.5860 338.9590
B2-D0 33.5480 33.5820 32.1000 32.2000
B2-J3 137.1130 137.2070 40.8340 40.9590
D0-J3 104.0830 104.1390 43.6520 43.7630
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60901.08920636
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V Y Oph
HIERARCH ESO INS SOBJ NAME Y_Oph
RA 268.160118
DEC -6.1436
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE COMBINED
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 K0
HIERARCH ESO ISS CONF STATION2 B2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 J3
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 121.913
HIERARCH ESO ISS PBL12 END 121.787
HIERARCH ESO ISS PBLA12 START 243.0
HIERARCH ESO ISS PBLA12 END 243.1
HIERARCH ESO ISS PBL13 START 94.73
HIERARCH ESO ISS PBL13 END 94.533
HIERARCH ESO ISS PBLA13 START 253.5
HIERARCH ESO ISS PBLA13 END 253.6
HIERARCH ESO ISS PBL14 START 52.027
HIERARCH ESO ISS PBL14 END 51.923
HIERARCH ESO ISS PBLA14 START 338.586
HIERARCH ESO ISS PBLA14 END 338.959
HIERARCH ESO ISS PBL23 START 33.548
HIERARCH ESO ISS PBL23 END 33.582
HIERARCH ESO ISS PBLA23 START 32.1
HIERARCH ESO ISS PBLA23 END 32.2
HIERARCH ESO ISS PBL24 START 137.113
HIERARCH ESO ISS PBL24 END 137.207
HIERARCH ESO ISS PBLA24 START 40.834
HIERARCH ESO ISS PBLA24 END 40.959
HIERARCH ESO ISS PBL34 START 104.083
HIERARCH ESO ISS PBL34 END 104.139
HIERARCH ESO ISS PBLA34 START 43.652
HIERARCH ESO ISS PBLA34 END 43.763
HIERARCH ESO ISS AMBI TAU0 START 0.006261
HIERARCH ESO ISS AMBI TAU0 END 0.006261
HIERARCH ESO ISS AMBI TEMP 14.15
HIERARCH ESO ISS AMBI FWHM START 0.81
HIERARCH ESO ISS AMBI FWHM END 0.82