Exposure
ID
PIONI.2025-12-03T08:23:04.044_1
Header ID
PIONI.2025-12-03T08:23:04.044
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 08:23:04.044
UTC End
2025-12-03 08:23:42.444
MJD Start
61012.349352357
MJD End
61012.34979680144
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.004458
Ambient temperature (°C)
13.84
Seeing (arcsec)
0.9
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 53.2550 53.0260 117.2000 117.3000
A0-J2 91.9530 91.6340 84.2000 84.1000
A0-K0 110.9040 110.7010 63.7650 63.6780
G1-J2 55.4960 55.4470 52.6000 52.6000
G1-K0 90.0040 90.0220 35.3780 35.3600
J2-K0 40.5100 40.5290 11.3790 11.4750
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 61012.349352357
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 53.255
HIERARCH ESO ISS PBL12 END 53.026
HIERARCH ESO ISS PBLA12 START 117.2
HIERARCH ESO ISS PBLA12 END 117.3
HIERARCH ESO ISS PBL13 START 91.953
HIERARCH ESO ISS PBL13 END 91.634
HIERARCH ESO ISS PBLA13 START 84.2
HIERARCH ESO ISS PBLA13 END 84.1
HIERARCH ESO ISS PBL14 START 110.904
HIERARCH ESO ISS PBL14 END 110.701
HIERARCH ESO ISS PBLA14 START 63.765
HIERARCH ESO ISS PBLA14 END 63.678
HIERARCH ESO ISS PBL23 START 55.496
HIERARCH ESO ISS PBL23 END 55.447
HIERARCH ESO ISS PBLA23 START 52.6
HIERARCH ESO ISS PBLA23 END 52.6
HIERARCH ESO ISS PBL24 START 90.004
HIERARCH ESO ISS PBL24 END 90.022
HIERARCH ESO ISS PBLA24 START 35.378
HIERARCH ESO ISS PBLA24 END 35.36
HIERARCH ESO ISS PBL34 START 40.51
HIERARCH ESO ISS PBL34 END 40.529
HIERARCH ESO ISS PBLA34 START 11.379
HIERARCH ESO ISS PBLA34 END 11.475
HIERARCH ESO ISS AMBI TAU0 START 0.004458
HIERARCH ESO ISS AMBI TAU0 END 0.004458
HIERARCH ESO ISS AMBI TEMP 13.84
HIERARCH ESO ISS AMBI FWHM START 0.9
HIERARCH ESO ISS AMBI FWHM END 0.9