Exposure
ID
PIONI.2025-12-03T08:24:45.016_1
Header ID
PIONI.2025-12-03T08:24:45.016
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 08:24:45.016
UTC End
2025-12-03 08:25:23.416
MJD Start
61012.3505210225
MJD End
61012.35096546694
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.004346
Ambient temperature (°C)
13.8
Seeing (arcsec)
0.91
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 52.7820 52.5520 117.4000 117.5000
A0-J2 91.2940 90.9730 84.1000 84.0000
A0-K0 110.4860 110.2810 63.5870 63.5020
G1-J2 55.3940 55.3430 52.5000 52.4000
G1-K0 90.0420 90.0600 35.3420 35.3260
J2-K0 40.5490 40.5680 11.5790 11.6770
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 61012.3505210225
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 52.782
HIERARCH ESO ISS PBL12 END 52.552
HIERARCH ESO ISS PBLA12 START 117.4
HIERARCH ESO ISS PBLA12 END 117.5
HIERARCH ESO ISS PBL13 START 91.294
HIERARCH ESO ISS PBL13 END 90.973
HIERARCH ESO ISS PBLA13 START 84.1
HIERARCH ESO ISS PBLA13 END 84.0
HIERARCH ESO ISS PBL14 START 110.486
HIERARCH ESO ISS PBL14 END 110.281
HIERARCH ESO ISS PBLA14 START 63.587
HIERARCH ESO ISS PBLA14 END 63.502
HIERARCH ESO ISS PBL23 START 55.394
HIERARCH ESO ISS PBL23 END 55.343
HIERARCH ESO ISS PBLA23 START 52.5
HIERARCH ESO ISS PBLA23 END 52.4
HIERARCH ESO ISS PBL24 START 90.042
HIERARCH ESO ISS PBL24 END 90.06
HIERARCH ESO ISS PBLA24 START 35.342
HIERARCH ESO ISS PBLA24 END 35.326
HIERARCH ESO ISS PBL34 START 40.549
HIERARCH ESO ISS PBL34 END 40.568
HIERARCH ESO ISS PBLA34 START 11.579
HIERARCH ESO ISS PBLA34 END 11.677
HIERARCH ESO ISS AMBI TAU0 START 0.004346
HIERARCH ESO ISS AMBI TAU0 END 0.004346
HIERARCH ESO ISS AMBI TEMP 13.8
HIERARCH ESO ISS AMBI FWHM START 0.91
HIERARCH ESO ISS AMBI FWHM END 0.91