Exposure
ID
PIONI.2025-10-15T02:56:53.412_1
Header ID
PIONI.2025-10-15T02:56:53.412
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 02:56:53.412
UTC End
2025-10-15 02:57:31.812
MJD Start
60963.1228404189
MJD End
60963.123284863344
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.0043145
Ambient temperature (°C)
12.46
Seeing (arcsec)
0.62
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 47.9020 47.8840 142.5000 142.4000
A0-J2 103.0090 103.2680 105.3000 105.2000
A0-J6 109.5330 109.5940 7.7440 7.9250
B5-J2 71.0210 71.3160 81.2000 81.2000
B5-J6 147.2170 147.1710 354.3730 354.5070
J2-J6 159.8610 159.7660 328.0450 328.0490
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 60963.1228404189
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 47.902
HIERARCH ESO ISS PBL12 END 47.884
HIERARCH ESO ISS PBLA12 START 142.5
HIERARCH ESO ISS PBLA12 END 142.4
HIERARCH ESO ISS PBL13 START 103.009
HIERARCH ESO ISS PBL13 END 103.268
HIERARCH ESO ISS PBLA13 START 105.3
HIERARCH ESO ISS PBLA13 END 105.2
HIERARCH ESO ISS PBL14 START 109.533
HIERARCH ESO ISS PBL14 END 109.594
HIERARCH ESO ISS PBLA14 START 7.744
HIERARCH ESO ISS PBLA14 END 7.925
HIERARCH ESO ISS PBL23 START 71.021
HIERARCH ESO ISS PBL23 END 71.316
HIERARCH ESO ISS PBLA23 START 81.2
HIERARCH ESO ISS PBLA23 END 81.2
HIERARCH ESO ISS PBL24 START 147.217
HIERARCH ESO ISS PBL24 END 147.171
HIERARCH ESO ISS PBLA24 START 354.373
HIERARCH ESO ISS PBLA24 END 354.507
HIERARCH ESO ISS PBL34 START 159.861
HIERARCH ESO ISS PBL34 END 159.766
HIERARCH ESO ISS PBLA34 START 328.045
HIERARCH ESO ISS PBLA34 END 328.049
HIERARCH ESO ISS AMBI TAU0 START 0.003003
HIERARCH ESO ISS AMBI TAU0 END 0.005626
HIERARCH ESO ISS AMBI TEMP 12.46
HIERARCH ESO ISS AMBI FWHM START 0.64
HIERARCH ESO ISS AMBI FWHM END 0.6