Exposure
ID
PIONI.2025-10-15T02:55:12.422_1
Header ID
PIONI.2025-10-15T02:55:12.422
Date updated
2025-10-15 03:01:27 UTC+0000
Release date
2026-10-15 03:01:27 UTC+0000
UTC Start
2025-10-15 02:55:12.422
UTC End
2025-10-15 02:55:50.822
MJD Start
60963.1216715463
MJD End
60963.12211599074
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.003003
Ambient temperature (°C)
12.44
Seeing (arcsec)
0.64
Observation
ID
70940
Category
science
Program ID
116.296R.001
Program Title
WEIGHING SUN-LIKE STARS : HIGH-PRECISION MASSES OF G-TYPE MAIN-SEQUENCE BINARIES
Program Type
Normal
PI / COI
JONAK / MOURARD / NARDETTO
Target
ID
52645
Name
29Ari
RA
38.224893
DEC
15.03482
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
A0 B5 J2 J6
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B5 47.9380 47.9210 142.5000 142.5000
A0-J2 102.4710 102.7330 105.5000 105.4000
A0-J6 109.4120 109.4700 7.3790 7.5550
B5-J2 70.4110 70.7080 81.2000 81.2000
B5-J6 147.3160 147.2670 354.1060 354.2340
J2-J6 160.0540 159.9600 328.0480 328.0450
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 116.296R.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE FRINGE,OBJECT
MJD-OBS 60963.1216715463
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME 29Ari
RA 38.224893
DEC 15.03482
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 B5
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 J6
HIERARCH ESO DET DIT 0.00075
HIERARCH ESO DET NDIT 51200
HIERARCH ESO ISS PBL12 START 47.938
HIERARCH ESO ISS PBL12 END 47.921
HIERARCH ESO ISS PBLA12 START 142.5
HIERARCH ESO ISS PBLA12 END 142.5
HIERARCH ESO ISS PBL13 START 102.471
HIERARCH ESO ISS PBL13 END 102.733
HIERARCH ESO ISS PBLA13 START 105.5
HIERARCH ESO ISS PBLA13 END 105.4
HIERARCH ESO ISS PBL14 START 109.412
HIERARCH ESO ISS PBL14 END 109.47
HIERARCH ESO ISS PBLA14 START 7.379
HIERARCH ESO ISS PBLA14 END 7.555
HIERARCH ESO ISS PBL23 START 70.411
HIERARCH ESO ISS PBL23 END 70.708
HIERARCH ESO ISS PBLA23 START 81.2
HIERARCH ESO ISS PBLA23 END 81.2
HIERARCH ESO ISS PBL24 START 147.316
HIERARCH ESO ISS PBL24 END 147.267
HIERARCH ESO ISS PBLA24 START 354.106
HIERARCH ESO ISS PBLA24 END 354.234
HIERARCH ESO ISS PBL34 START 160.054
HIERARCH ESO ISS PBL34 END 159.96
HIERARCH ESO ISS PBLA34 START 328.048
HIERARCH ESO ISS PBLA34 END 328.045
HIERARCH ESO ISS AMBI TAU0 START 0.003003
HIERARCH ESO ISS AMBI TAU0 END 0.003003
HIERARCH ESO ISS AMBI TEMP 12.44
HIERARCH ESO ISS AMBI FWHM START 0.64
HIERARCH ESO ISS AMBI FWHM END 0.64