Exposure
ID
PIONI.2025-10-13T02:58:34.517_1
Header ID
PIONI.2025-10-13T02:58:34.517
Date updated
2025-10-13 03:06:33 UTC+0000
Release date
2026-10-13 03:06:33 UTC+0000
UTC Start
2025-10-13 02:58:34.517
UTC End
2025-10-13 02:59:12.917
MJD Start
60961.124010609
MJD End
60961.12445505344
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.010085
Ambient temperature (°C)
13.48
Seeing (arcsec)
0.41
Observation
ID
70925
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
52632
Name
29Ari
RA
38.224894
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 48.0310 48.0150 142.7000 142.6000
A0-J2 101.0130 101.2800 106.0000 105.9000
A0-J6 109.1170 109.1670 6.3890 6.5670
B5-J2 68.7630 69.0640 81.3000 81.3000
B5-J6 147.6020 147.5480 353.3880 353.5170
J2-J6 160.5580 160.4680 328.0530 328.0500
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 60961.124010609
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME 29Ari
RA 38.224894
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 48.031
HIERARCH ESO ISS PBL12 END 48.015
HIERARCH ESO ISS PBLA12 START 142.7
HIERARCH ESO ISS PBLA12 END 142.6
HIERARCH ESO ISS PBL13 START 101.013
HIERARCH ESO ISS PBL13 END 101.28
HIERARCH ESO ISS PBLA13 START 106.0
HIERARCH ESO ISS PBLA13 END 105.9
HIERARCH ESO ISS PBL14 START 109.117
HIERARCH ESO ISS PBL14 END 109.167
HIERARCH ESO ISS PBLA14 START 6.389
HIERARCH ESO ISS PBLA14 END 6.567
HIERARCH ESO ISS PBL23 START 68.763
HIERARCH ESO ISS PBL23 END 69.064
HIERARCH ESO ISS PBLA23 START 81.3
HIERARCH ESO ISS PBLA23 END 81.3
HIERARCH ESO ISS PBL24 START 147.602
HIERARCH ESO ISS PBL24 END 147.548
HIERARCH ESO ISS PBLA24 START 353.388
HIERARCH ESO ISS PBLA24 END 353.517
HIERARCH ESO ISS PBL34 START 160.558
HIERARCH ESO ISS PBL34 END 160.468
HIERARCH ESO ISS PBLA34 START 328.053
HIERARCH ESO ISS PBLA34 END 328.05
HIERARCH ESO ISS AMBI TAU0 START 0.010085
HIERARCH ESO ISS AMBI TAU0 END 0.010085
HIERARCH ESO ISS AMBI TEMP 13.48
HIERARCH ESO ISS AMBI FWHM START 0.41
HIERARCH ESO ISS AMBI FWHM END 0.41