Exposure
ID
GRAVI.2025-05-23T08:03:07.155_1
Header ID
GRAVI.2025-05-23T08:03:07.155
Date updated
2025-05-23 08:16:31 UTC+0000
Release date
2026-05-23 08:16:31 UTC+0000
UTC Start
2025-05-23 08:03:07.155
UTC End
2025-05-23 08:05:47.155
MJD Start
60818.33549948
MJD End
60818.33735133186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0046685
Ambient temperature (°C)
13.66
Seeing (arcsec)
0.495
Observation
ID
67546
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
50236
Name
Y_Oph
RA
268.161237
DEC
-6.1436
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
K0 G2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-G2 62.7290 62.3770 274.3000 274.4000
K0-D0 92.2510 91.9180 253.8000 253.9000
K0-J3 51.0690 50.9750 342.3490 342.7670
G2-D0 39.9820 39.9860 220.7000 220.7000
G2-J3 64.4460 64.4160 46.9250 46.9820
D0-J3 104.2800 104.2560 44.5250 44.5940
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 60818.33549948
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V Y Oph
HIERARCH ESO INS SOBJ NAME Y_Oph
RA 268.161237
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 G2
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 62.729
HIERARCH ESO ISS PBL12 END 62.377
HIERARCH ESO ISS PBLA12 START 274.3
HIERARCH ESO ISS PBLA12 END 274.4
HIERARCH ESO ISS PBL13 START 92.251
HIERARCH ESO ISS PBL13 END 91.918
HIERARCH ESO ISS PBLA13 START 253.8
HIERARCH ESO ISS PBLA13 END 253.9
HIERARCH ESO ISS PBL14 START 51.069
HIERARCH ESO ISS PBL14 END 50.975
HIERARCH ESO ISS PBLA14 START 342.349
HIERARCH ESO ISS PBLA14 END 342.767
HIERARCH ESO ISS PBL23 START 39.982
HIERARCH ESO ISS PBL23 END 39.986
HIERARCH ESO ISS PBLA23 START 220.7
HIERARCH ESO ISS PBLA23 END 220.7
HIERARCH ESO ISS PBL24 START 64.446
HIERARCH ESO ISS PBL24 END 64.416
HIERARCH ESO ISS PBLA24 START 46.925
HIERARCH ESO ISS PBLA24 END 46.982
HIERARCH ESO ISS PBL34 START 104.28
HIERARCH ESO ISS PBL34 END 104.256
HIERARCH ESO ISS PBLA34 START 44.525
HIERARCH ESO ISS PBLA34 END 44.594
HIERARCH ESO ISS AMBI TAU0 START 0.004974
HIERARCH ESO ISS AMBI TAU0 END 0.004363
HIERARCH ESO ISS AMBI TEMP 13.66
HIERARCH ESO ISS AMBI FWHM START 0.49
HIERARCH ESO ISS AMBI FWHM END 0.5