Exposure
ID
GRAVI.2025-07-24T03:50:31.407_1
Header ID
GRAVI.2025-07-24T03:50:31.407
Date updated
2025-07-24 04:00:45 UTC+0000
Release date
2026-07-24 04:00:45 UTC+0000
UTC Start
2025-07-24 03:50:31.407
UTC End
2025-07-24 03:53:11.407
MJD Start
60880.16008573
MJD End
60880.161937581855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.003808
Ambient temperature (°C)
12.96
Seeing (arcsec)
0.52
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 81.0480 80.5930 120.1000 120.4000
A0-J2 120.1830 119.5620 95.2000 95.3000
A0-C1 20.2580 20.1440 120.1080 120.3760
G1-J2 57.7780 57.6940 59.1000 59.1000
G1-C1 60.7900 60.4490 300.0880 300.3550
J2-C1 102.1620 101.6710 270.4370 270.5190
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 60880.16008573
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 81.048
HIERARCH ESO ISS PBL12 END 80.593
HIERARCH ESO ISS PBLA12 START 120.1
HIERARCH ESO ISS PBLA12 END 120.4
HIERARCH ESO ISS PBL13 START 120.183
HIERARCH ESO ISS PBL13 END 119.562
HIERARCH ESO ISS PBLA13 START 95.2
HIERARCH ESO ISS PBLA13 END 95.3
HIERARCH ESO ISS PBL14 START 20.258
HIERARCH ESO ISS PBL14 END 20.144
HIERARCH ESO ISS PBLA14 START 120.108
HIERARCH ESO ISS PBLA14 END 120.376
HIERARCH ESO ISS PBL23 START 57.778
HIERARCH ESO ISS PBL23 END 57.694
HIERARCH ESO ISS PBLA23 START 59.1
HIERARCH ESO ISS PBLA23 END 59.1
HIERARCH ESO ISS PBL24 START 60.79
HIERARCH ESO ISS PBL24 END 60.449
HIERARCH ESO ISS PBLA24 START 300.088
HIERARCH ESO ISS PBLA24 END 300.355
HIERARCH ESO ISS PBL34 START 102.162
HIERARCH ESO ISS PBL34 END 101.671
HIERARCH ESO ISS PBLA34 START 270.437
HIERARCH ESO ISS PBLA34 END 270.519
HIERARCH ESO ISS AMBI TAU0 START 0.004263
HIERARCH ESO ISS AMBI TAU0 END 0.003353
HIERARCH ESO ISS AMBI TEMP 12.96
HIERARCH ESO ISS AMBI FWHM START 0.54
HIERARCH ESO ISS AMBI FWHM END 0.5