Exposure
ID
PIONI.2025-10-14T02:54:58.105_1
Header ID
PIONI.2025-10-14T02:54:58.105
Date updated
2025-10-14 03:01:20 UTC+0000
Release date
2026-10-14 03:01:20 UTC+0000
UTC Start
2025-10-14 02:54:58.105
UTC End
2025-10-14 02:55:36.505
MJD Start
60962.1215058444
MJD End
60962.12195028884
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.0058414999999999995
Ambient temperature (°C)
11.15
Seeing (arcsec)
0.575
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 48.0250 48.0080 142.6000 142.6000
A0-J2 101.1200 101.3860 105.9000 105.8000
A0-J6 109.1390 109.1900 6.4580 6.6410
B5-J2 68.8830 69.1840 81.3000 81.3000
B5-J6 147.5820 147.5280 353.4380 353.5700
J2-J6 160.5230 160.4320 328.0500 328.0510
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 60962.1215058444
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 48.025
HIERARCH ESO ISS PBL12 END 48.008
HIERARCH ESO ISS PBLA12 START 142.6
HIERARCH ESO ISS PBLA12 END 142.6
HIERARCH ESO ISS PBL13 START 101.12
HIERARCH ESO ISS PBL13 END 101.386
HIERARCH ESO ISS PBLA13 START 105.9
HIERARCH ESO ISS PBLA13 END 105.8
HIERARCH ESO ISS PBL14 START 109.139
HIERARCH ESO ISS PBL14 END 109.19
HIERARCH ESO ISS PBLA14 START 6.458
HIERARCH ESO ISS PBLA14 END 6.641
HIERARCH ESO ISS PBL23 START 68.883
HIERARCH ESO ISS PBL23 END 69.184
HIERARCH ESO ISS PBLA23 START 81.3
HIERARCH ESO ISS PBLA23 END 81.3
HIERARCH ESO ISS PBL24 START 147.582
HIERARCH ESO ISS PBL24 END 147.528
HIERARCH ESO ISS PBLA24 START 353.438
HIERARCH ESO ISS PBLA24 END 353.57
HIERARCH ESO ISS PBL34 START 160.523
HIERARCH ESO ISS PBL34 END 160.432
HIERARCH ESO ISS PBLA34 START 328.05
HIERARCH ESO ISS PBLA34 END 328.051
HIERARCH ESO ISS AMBI TAU0 START 0.005219
HIERARCH ESO ISS AMBI TAU0 END 0.006464
HIERARCH ESO ISS AMBI TEMP 11.15
HIERARCH ESO ISS AMBI FWHM START 0.61
HIERARCH ESO ISS AMBI FWHM END 0.54