Exposure
ID
GRAVI.2025-07-24T04:07:01.449_1
Header ID
GRAVI.2025-07-24T04:07:01.449
Date updated
2025-07-24 04:20:41 UTC+0000
Release date
2026-07-24 04:20:41 UTC+0000
UTC Start
2025-07-24 04:07:01.449
UTC End
2025-07-24 04:09:41.449
MJD Start
60880.17154455
MJD End
60880.17339640186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0033299999999999996
Ambient temperature (°C)
12.79
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 78.4110 77.9140 121.7000 122.0000
A0-J2 116.4810 115.7570 95.8000 96.0000
A0-C1 19.5990 19.4740 121.6880 121.9910
G1-J2 57.2230 57.1000 59.2000 59.2000
G1-C1 58.8120 58.4390 301.6670 301.9700
J2-C1 99.2110 98.6300 270.9030 270.9860
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 60880.17154455
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 78.411
HIERARCH ESO ISS PBL12 END 77.914
HIERARCH ESO ISS PBLA12 START 121.7
HIERARCH ESO ISS PBLA12 END 122.0
HIERARCH ESO ISS PBL13 START 116.481
HIERARCH ESO ISS PBL13 END 115.757
HIERARCH ESO ISS PBLA13 START 95.8
HIERARCH ESO ISS PBLA13 END 96.0
HIERARCH ESO ISS PBL14 START 19.599
HIERARCH ESO ISS PBL14 END 19.474
HIERARCH ESO ISS PBLA14 START 121.688
HIERARCH ESO ISS PBLA14 END 121.991
HIERARCH ESO ISS PBL23 START 57.223
HIERARCH ESO ISS PBL23 END 57.1
HIERARCH ESO ISS PBLA23 START 59.2
HIERARCH ESO ISS PBLA23 END 59.2
HIERARCH ESO ISS PBL24 START 58.812
HIERARCH ESO ISS PBL24 END 58.439
HIERARCH ESO ISS PBLA24 START 301.667
HIERARCH ESO ISS PBLA24 END 301.97
HIERARCH ESO ISS PBL34 START 99.211
HIERARCH ESO ISS PBL34 END 98.63
HIERARCH ESO ISS PBLA34 START 270.903
HIERARCH ESO ISS PBLA34 END 270.986
HIERARCH ESO ISS AMBI TAU0 START 0.003698
HIERARCH ESO ISS AMBI TAU0 END 0.002962
HIERARCH ESO ISS AMBI TEMP 12.79
HIERARCH ESO ISS AMBI FWHM START 0.52
HIERARCH ESO ISS AMBI FWHM END 0.56