Exposure
ID
GRAVI.2025-08-14T02:01:48.413_1
Header ID
GRAVI.2025-08-14T02:01:48.413
Date updated
2025-08-14 02:10:51 UTC+0000
Release date
2026-08-14 02:10:51 UTC+0000
UTC Start
2025-08-14 02:01:48.413
UTC End
2025-08-14 02:04:28.413
MJD Start
60901.08458811
MJD End
60901.08643996186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0063975
Ambient temperature (°C)
14.13
Seeing (arcsec)
0.78
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 122.1390 122.0480 242.9000 243.0000
K0-D0 95.1210 94.9560 253.4000 253.5000
K0-J3 52.2620 52.1570 337.7600 338.1260
B2-D0 33.4660 33.5030 31.7000 31.8000
B2-J3 136.8640 136.9810 40.5350 40.6710
D0-J3 103.9270 104.0020 43.3820 43.5060
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 60901.08458811
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 122.139
HIERARCH ESO ISS PBL12 END 122.048
HIERARCH ESO ISS PBLA12 START 242.9
HIERARCH ESO ISS PBLA12 END 243.0
HIERARCH ESO ISS PBL13 START 95.121
HIERARCH ESO ISS PBL13 END 94.956
HIERARCH ESO ISS PBLA13 START 253.4
HIERARCH ESO ISS PBLA13 END 253.5
HIERARCH ESO ISS PBL14 START 52.262
HIERARCH ESO ISS PBL14 END 52.157
HIERARCH ESO ISS PBLA14 START 337.76
HIERARCH ESO ISS PBLA14 END 338.126
HIERARCH ESO ISS PBL23 START 33.466
HIERARCH ESO ISS PBL23 END 33.503
HIERARCH ESO ISS PBLA23 START 31.7
HIERARCH ESO ISS PBLA23 END 31.8
HIERARCH ESO ISS PBL24 START 136.864
HIERARCH ESO ISS PBL24 END 136.981
HIERARCH ESO ISS PBLA24 START 40.535
HIERARCH ESO ISS PBLA24 END 40.671
HIERARCH ESO ISS PBL34 START 103.927
HIERARCH ESO ISS PBL34 END 104.002
HIERARCH ESO ISS PBLA34 START 43.382
HIERARCH ESO ISS PBLA34 END 43.506
HIERARCH ESO ISS AMBI TAU0 START 0.006534
HIERARCH ESO ISS AMBI TAU0 END 0.006261
HIERARCH ESO ISS AMBI TEMP 14.13
HIERARCH ESO ISS AMBI FWHM START 0.65
HIERARCH ESO ISS AMBI FWHM END 0.91