Exposure
ID
PIONI.2025-10-13T02:56:03.147_1
Header ID
PIONI.2025-10-13T02:56:03.147
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 02:56:03.148
UTC End
2025-10-13 02:56:41.548
MJD Start
60961.122258652
MJD End
60961.122703096444
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.0074164999999999995
Ambient temperature (°C)
13.48
Seeing (arcsec)
0.44999999999999996
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 48.0800 48.0650 142.7000 142.7000
A0-J2 100.1850 100.4490 106.3000 106.2000
A0-J6 108.9700 109.0150 5.8300 6.0070
B5-J2 67.8310 68.1280 81.4000 81.4000
B5-J6 147.7760 147.7200 352.9880 353.1150
J2-J6 160.8330 160.7460 328.0590 328.0560
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 60961.122258652
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 48.08
HIERARCH ESO ISS PBL12 END 48.065
HIERARCH ESO ISS PBLA12 START 142.7
HIERARCH ESO ISS PBLA12 END 142.7
HIERARCH ESO ISS PBL13 START 100.185
HIERARCH ESO ISS PBL13 END 100.449
HIERARCH ESO ISS PBLA13 START 106.3
HIERARCH ESO ISS PBLA13 END 106.2
HIERARCH ESO ISS PBL14 START 108.97
HIERARCH ESO ISS PBL14 END 109.015
HIERARCH ESO ISS PBLA14 START 5.83
HIERARCH ESO ISS PBLA14 END 6.007
HIERARCH ESO ISS PBL23 START 67.831
HIERARCH ESO ISS PBL23 END 68.128
HIERARCH ESO ISS PBLA23 START 81.4
HIERARCH ESO ISS PBLA23 END 81.4
HIERARCH ESO ISS PBL24 START 147.776
HIERARCH ESO ISS PBL24 END 147.72
HIERARCH ESO ISS PBLA24 START 352.988
HIERARCH ESO ISS PBLA24 END 353.115
HIERARCH ESO ISS PBL34 START 160.833
HIERARCH ESO ISS PBL34 END 160.746
HIERARCH ESO ISS PBLA34 START 328.059
HIERARCH ESO ISS PBLA34 END 328.056
HIERARCH ESO ISS AMBI TAU0 START 0.00736
HIERARCH ESO ISS AMBI TAU0 END 0.007473
HIERARCH ESO ISS AMBI TEMP 13.48
HIERARCH ESO ISS AMBI FWHM START 0.47
HIERARCH ESO ISS AMBI FWHM END 0.43