Exposure
ID
GRAVI.2025-08-14T01:58:33.404_1
Header ID
GRAVI.2025-08-14T01:58:33.404
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 01:58:33.404
UTC End
2025-08-14 02:01:13.404
MJD Start
60901.08233107
MJD End
60901.084182921855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.006788499999999999
Ambient temperature (°C)
14.09
Seeing (arcsec)
0.635
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 122.2190 122.1470 242.8000 242.9000
K0-D0 95.2860 95.1380 253.4000 253.4000
K0-J3 52.3790 52.2740 337.3630 337.7220
B2-D0 33.4230 33.4620 31.5000 31.6000
B2-J3 136.7250 136.8510 40.3780 40.5200
D0-J3 103.8360 103.9190 43.2410 43.3690
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 60901.08233107
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 122.219
HIERARCH ESO ISS PBL12 END 122.147
HIERARCH ESO ISS PBLA12 START 242.8
HIERARCH ESO ISS PBLA12 END 242.9
HIERARCH ESO ISS PBL13 START 95.286
HIERARCH ESO ISS PBL13 END 95.138
HIERARCH ESO ISS PBLA13 START 253.4
HIERARCH ESO ISS PBLA13 END 253.4
HIERARCH ESO ISS PBL14 START 52.379
HIERARCH ESO ISS PBL14 END 52.274
HIERARCH ESO ISS PBLA14 START 337.363
HIERARCH ESO ISS PBLA14 END 337.722
HIERARCH ESO ISS PBL23 START 33.423
HIERARCH ESO ISS PBL23 END 33.462
HIERARCH ESO ISS PBLA23 START 31.5
HIERARCH ESO ISS PBLA23 END 31.6
HIERARCH ESO ISS PBL24 START 136.725
HIERARCH ESO ISS PBL24 END 136.851
HIERARCH ESO ISS PBLA24 START 40.378
HIERARCH ESO ISS PBLA24 END 40.52
HIERARCH ESO ISS PBL34 START 103.836
HIERARCH ESO ISS PBL34 END 103.919
HIERARCH ESO ISS PBLA34 START 43.241
HIERARCH ESO ISS PBLA34 END 43.369
HIERARCH ESO ISS AMBI TAU0 START 0.007043
HIERARCH ESO ISS AMBI TAU0 END 0.006534
HIERARCH ESO ISS AMBI TEMP 14.09
HIERARCH ESO ISS AMBI FWHM START 0.62
HIERARCH ESO ISS AMBI FWHM END 0.65