Exposure
ID
GRAVI.2025-07-24T04:00:25.432_1
Header ID
GRAVI.2025-07-24T04:00:25.432
Date updated
2025-07-24 04:10:39 UTC+0000
Release date
2026-07-24 04:10:39 UTC+0000
UTC Start
2025-07-24 04:00:25.432
UTC End
2025-07-24 04:03:05.432
MJD Start
60880.16696102
MJD End
60880.16881287185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0037165
Ambient temperature (°C)
12.8
Seeing (arcsec)
0.54
Observation
ID
68750
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
51155
Name
Y_Oph
RA
268.159
DEC
-6.1436
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 79.4960 79.0160 121.0000 121.3000
A0-J2 118.0320 117.3510 95.6000 95.7000
A0-C1 19.8700 19.7500 121.0310 121.3180
G1-J2 57.4710 57.3640 59.2000 59.2000
G1-C1 59.6260 59.2660 301.0100 301.2970
J2-C1 100.4530 99.9080 270.7160 270.7970
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 60880.16696102
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V Y Oph
HIERARCH ESO INS SOBJ NAME Y_Oph
RA 268.159
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 A0
HIERARCH ESO ISS CONF STATION2 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 79.496
HIERARCH ESO ISS PBL12 END 79.016
HIERARCH ESO ISS PBLA12 START 121.0
HIERARCH ESO ISS PBLA12 END 121.3
HIERARCH ESO ISS PBL13 START 118.032
HIERARCH ESO ISS PBL13 END 117.351
HIERARCH ESO ISS PBLA13 START 95.6
HIERARCH ESO ISS PBLA13 END 95.7
HIERARCH ESO ISS PBL14 START 19.87
HIERARCH ESO ISS PBL14 END 19.75
HIERARCH ESO ISS PBLA14 START 121.031
HIERARCH ESO ISS PBLA14 END 121.318
HIERARCH ESO ISS PBL23 START 57.471
HIERARCH ESO ISS PBL23 END 57.364
HIERARCH ESO ISS PBLA23 START 59.2
HIERARCH ESO ISS PBLA23 END 59.2
HIERARCH ESO ISS PBL24 START 59.626
HIERARCH ESO ISS PBL24 END 59.266
HIERARCH ESO ISS PBLA24 START 301.01
HIERARCH ESO ISS PBLA24 END 301.297
HIERARCH ESO ISS PBL34 START 100.453
HIERARCH ESO ISS PBL34 END 99.908
HIERARCH ESO ISS PBLA34 START 270.716
HIERARCH ESO ISS PBLA34 END 270.797
HIERARCH ESO ISS AMBI TAU0 START 0.003776
HIERARCH ESO ISS AMBI TAU0 END 0.003657
HIERARCH ESO ISS AMBI TEMP 12.8
HIERARCH ESO ISS AMBI FWHM START 0.46
HIERARCH ESO ISS AMBI FWHM END 0.62