Exposure
ID
PIONI.2025-12-03T08:23:54.558_1
Header ID
PIONI.2025-12-03T08:23:54.558
Date updated
2025-12-03 08:31:02 UTC+0000
Release date
2026-12-03 08:31:02 UTC+0000
UTC Start
2025-12-03 08:23:54.558
UTC End
2025-12-03 08:24:32.958
MJD Start
61012.3499370106
MJD End
61012.35038145504
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.004402
Ambient temperature (°C)
13.79
Seeing (arcsec)
0.905
Observation
ID
71970
Category
science
Program ID
116.290A.001
Program Title
CONSTRAINING ASTEROSEISMIC MODELS OF MASSIVE OB STARS USING HIGH-PRECISION INTERFEROMETRY
Program Type
Normal
PI / COI
VRANCKEN / DESHMUKH / SANA / TKACHENKO / AERTS / KLIAPETS
Target
ID
53431
Name
phi01 Ori
RA
83.704045
DEC
9.48957
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
A0 G1 J2 K0
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 53.0170 52.7870 117.3000 117.4000
A0-J2 91.6210 91.3010 84.1000 84.1000
A0-K0 110.6930 110.4900 63.6750 63.5900
G1-J2 55.4450 55.3950 52.6000 52.5000
G1-K0 90.0230 90.0420 35.3600 35.3440
J2-K0 40.5300 40.5490 11.4790 11.5780
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 116.290A.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE FRINGE,OBJECT
MJD-OBS 61012.3499370106
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME phi01 Ori
RA 83.704045
DEC 9.48957
HIERARCH ESO INS OPTI2 NAME GRISM
HIERARCH ESO INS OPTI2 ID GRISM
HIERARCH ESO INS FILT1 NAME H
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 K0
HIERARCH ESO DET DIT 0.00075
HIERARCH ESO DET NDIT 51200
HIERARCH ESO ISS PBL12 START 53.017
HIERARCH ESO ISS PBL12 END 52.787
HIERARCH ESO ISS PBLA12 START 117.3
HIERARCH ESO ISS PBLA12 END 117.4
HIERARCH ESO ISS PBL13 START 91.621
HIERARCH ESO ISS PBL13 END 91.301
HIERARCH ESO ISS PBLA13 START 84.1
HIERARCH ESO ISS PBLA13 END 84.1
HIERARCH ESO ISS PBL14 START 110.693
HIERARCH ESO ISS PBL14 END 110.49
HIERARCH ESO ISS PBLA14 START 63.675
HIERARCH ESO ISS PBLA14 END 63.59
HIERARCH ESO ISS PBL23 START 55.445
HIERARCH ESO ISS PBL23 END 55.395
HIERARCH ESO ISS PBLA23 START 52.6
HIERARCH ESO ISS PBLA23 END 52.5
HIERARCH ESO ISS PBL24 START 90.023
HIERARCH ESO ISS PBL24 END 90.042
HIERARCH ESO ISS PBLA24 START 35.36
HIERARCH ESO ISS PBLA24 END 35.344
HIERARCH ESO ISS PBL34 START 40.53
HIERARCH ESO ISS PBL34 END 40.549
HIERARCH ESO ISS PBLA34 START 11.479
HIERARCH ESO ISS PBLA34 END 11.578
HIERARCH ESO ISS AMBI TAU0 START 0.004458
HIERARCH ESO ISS AMBI TAU0 END 0.004346
HIERARCH ESO ISS AMBI TEMP 13.79
HIERARCH ESO ISS AMBI FWHM START 0.9
HIERARCH ESO ISS AMBI FWHM END 0.91