Exposure
ID
GRAVI.2025-07-24T04:22:13.488_1
Header ID
GRAVI.2025-07-24T04:22:13.488
Date updated
2025-07-24 04:31:04 UTC+0000
Release date
2025-07-24 04:22:13 UTC+0000
UTC Start
2025-07-24 04:22:13.488
UTC End
2025-07-24 04:24:53.488
MJD Start
60880.18210055
MJD End
60880.18395240186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0030204999999999997
Ambient temperature (°C)
12.75
Seeing (arcsec)
0.485
Observation
ID
68946
Category
calibrator
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
51298
Name
HD156227
RA
259.17582
DEC
-6.24502
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 68.9980 68.4070 128.3000 128.8000
A0-J2 101.4680 100.4450 98.3000 98.5000
A0-C1 17.2460 17.0980 128.2990 128.7720
G1-J2 54.1290 53.8910 58.7000 58.6000
G1-C1 51.7520 51.3080 308.2760 308.7480
J2-C1 86.9640 86.1190 272.5960 272.7020
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60880.18210055
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 156227
HIERARCH ESO INS SOBJ NAME HD156227
RA 259.17582
DEC -6.24502
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 68.998
HIERARCH ESO ISS PBL12 END 68.407
HIERARCH ESO ISS PBLA12 START 128.3
HIERARCH ESO ISS PBLA12 END 128.8
HIERARCH ESO ISS PBL13 START 101.468
HIERARCH ESO ISS PBL13 END 100.445
HIERARCH ESO ISS PBLA13 START 98.3
HIERARCH ESO ISS PBLA13 END 98.5
HIERARCH ESO ISS PBL14 START 17.246
HIERARCH ESO ISS PBL14 END 17.098
HIERARCH ESO ISS PBLA14 START 128.299
HIERARCH ESO ISS PBLA14 END 128.772
HIERARCH ESO ISS PBL23 START 54.129
HIERARCH ESO ISS PBL23 END 53.891
HIERARCH ESO ISS PBLA23 START 58.7
HIERARCH ESO ISS PBLA23 END 58.6
HIERARCH ESO ISS PBL24 START 51.752
HIERARCH ESO ISS PBL24 END 51.308
HIERARCH ESO ISS PBLA24 START 308.276
HIERARCH ESO ISS PBLA24 END 308.748
HIERARCH ESO ISS PBL34 START 86.964
HIERARCH ESO ISS PBL34 END 86.119
HIERARCH ESO ISS PBLA34 START 272.596
HIERARCH ESO ISS PBLA34 END 272.702
HIERARCH ESO ISS AMBI TAU0 START 0.003164
HIERARCH ESO ISS AMBI TAU0 END 0.002877
HIERARCH ESO ISS AMBI TEMP 12.75
HIERARCH ESO ISS AMBI FWHM START 0.47
HIERARCH ESO ISS AMBI FWHM END 0.5