Exposure
ID
GRAVI.2025-08-14T01:51:51.387_1
Header ID
GRAVI.2025-08-14T01:51:51.387
Date updated
2025-08-14 02:00:48 UTC+0000
Release date
2026-08-14 02:00:48 UTC+0000
UTC Start
2025-08-14 01:51:51.387
UTC End
2025-08-14 01:54:31.387
MJD Start
60901.07767809
MJD End
60901.07952994185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0066395
Ambient temperature (°C)
14.05
Seeing (arcsec)
0.63
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 122.3240 122.2880 242.7000 242.7000
K0-D0 95.5700 95.4540 253.2000 253.3000
K0-J3 52.6190 52.5120 336.5700 336.9170
B2-D0 33.3310 33.3730 31.0000 31.2000
B2-J3 136.4050 136.5530 40.0420 40.1930
D0-J3 103.6200 103.7200 42.9350 43.0730
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 60901.07767809
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 122.324
HIERARCH ESO ISS PBL12 END 122.288
HIERARCH ESO ISS PBLA12 START 242.7
HIERARCH ESO ISS PBLA12 END 242.7
HIERARCH ESO ISS PBL13 START 95.57
HIERARCH ESO ISS PBL13 END 95.454
HIERARCH ESO ISS PBLA13 START 253.2
HIERARCH ESO ISS PBLA13 END 253.3
HIERARCH ESO ISS PBL14 START 52.619
HIERARCH ESO ISS PBL14 END 52.512
HIERARCH ESO ISS PBLA14 START 336.57
HIERARCH ESO ISS PBLA14 END 336.917
HIERARCH ESO ISS PBL23 START 33.331
HIERARCH ESO ISS PBL23 END 33.373
HIERARCH ESO ISS PBLA23 START 31.0
HIERARCH ESO ISS PBLA23 END 31.2
HIERARCH ESO ISS PBL24 START 136.405
HIERARCH ESO ISS PBL24 END 136.553
HIERARCH ESO ISS PBLA24 START 40.042
HIERARCH ESO ISS PBLA24 END 40.193
HIERARCH ESO ISS PBL34 START 103.62
HIERARCH ESO ISS PBL34 END 103.72
HIERARCH ESO ISS PBLA34 START 42.935
HIERARCH ESO ISS PBLA34 END 43.073
HIERARCH ESO ISS AMBI TAU0 START 0.006281
HIERARCH ESO ISS AMBI TAU0 END 0.006998
HIERARCH ESO ISS AMBI TEMP 14.05
HIERARCH ESO ISS AMBI FWHM START 0.65
HIERARCH ESO ISS AMBI FWHM END 0.61