Exposure
ID
PIONI.2025-10-15T02:56:03.019_1
Header ID
PIONI.2025-10-15T02:56:03.019
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 02:56:03.019
UTC End
2025-10-15 02:56:41.419
MJD Start
60963.1222571679
MJD End
60963.122701612345
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.003003
Ambient temperature (°C)
12.46
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 47.9200 47.9020 142.5000 142.5000
A0-J2 102.7380 102.9980 105.4000 105.3000
A0-J6 109.4710 109.5310 7.5620 7.7370
B5-J2 70.7140 71.0090 81.2000 81.2000
B5-J6 147.2660 147.2190 354.2400 354.3680
J2-J6 159.9580 159.8650 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 60963.1222571679
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 47.92
HIERARCH ESO ISS PBL12 END 47.902
HIERARCH ESO ISS PBLA12 START 142.5
HIERARCH ESO ISS PBLA12 END 142.5
HIERARCH ESO ISS PBL13 START 102.738
HIERARCH ESO ISS PBL13 END 102.998
HIERARCH ESO ISS PBLA13 START 105.4
HIERARCH ESO ISS PBLA13 END 105.3
HIERARCH ESO ISS PBL14 START 109.471
HIERARCH ESO ISS PBL14 END 109.531
HIERARCH ESO ISS PBLA14 START 7.562
HIERARCH ESO ISS PBLA14 END 7.737
HIERARCH ESO ISS PBL23 START 70.714
HIERARCH ESO ISS PBL23 END 71.009
HIERARCH ESO ISS PBLA23 START 81.2
HIERARCH ESO ISS PBLA23 END 81.2
HIERARCH ESO ISS PBL24 START 147.266
HIERARCH ESO ISS PBL24 END 147.219
HIERARCH ESO ISS PBLA24 START 354.24
HIERARCH ESO ISS PBLA24 END 354.368
HIERARCH ESO ISS PBL34 START 159.958
HIERARCH ESO ISS PBL34 END 159.865
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 12.46
HIERARCH ESO ISS AMBI FWHM START 0.64
HIERARCH ESO ISS AMBI FWHM END 0.64