Exposure
ID
PIONI.2025-10-13T02:57:44.083_1
Header ID
PIONI.2025-10-13T02:57:44.083
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 02:57:44.083
UTC End
2025-10-13 02:58:22.483
MJD Start
60961.1234268905
MJD End
60961.123871334945
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.009797
Ambient temperature (°C)
13.48
Seeing (arcsec)
0.39
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 48.0480 48.0320 142.7000 142.7000
A0-J2 100.7400 101.0020 106.1000 106.0000
A0-J6 109.0670 109.1150 6.2040 6.3810
B5-J2 68.4550 68.7510 81.3000 81.3000
B5-J6 147.6590 147.6040 353.2560 353.3830
J2-J6 160.6500 160.5620 328.0550 328.0530
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 60961.1234268905
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 48.048
HIERARCH ESO ISS PBL12 END 48.032
HIERARCH ESO ISS PBLA12 START 142.7
HIERARCH ESO ISS PBLA12 END 142.7
HIERARCH ESO ISS PBL13 START 100.74
HIERARCH ESO ISS PBL13 END 101.002
HIERARCH ESO ISS PBLA13 START 106.1
HIERARCH ESO ISS PBLA13 END 106.0
HIERARCH ESO ISS PBL14 START 109.067
HIERARCH ESO ISS PBL14 END 109.115
HIERARCH ESO ISS PBLA14 START 6.204
HIERARCH ESO ISS PBLA14 END 6.381
HIERARCH ESO ISS PBL23 START 68.455
HIERARCH ESO ISS PBL23 END 68.751
HIERARCH ESO ISS PBLA23 START 81.3
HIERARCH ESO ISS PBLA23 END 81.3
HIERARCH ESO ISS PBL24 START 147.659
HIERARCH ESO ISS PBL24 END 147.604
HIERARCH ESO ISS PBLA24 START 353.256
HIERARCH ESO ISS PBLA24 END 353.383
HIERARCH ESO ISS PBL34 START 160.65
HIERARCH ESO ISS PBL34 END 160.562
HIERARCH ESO ISS PBLA34 START 328.055
HIERARCH ESO ISS PBLA34 END 328.053
HIERARCH ESO ISS AMBI TAU0 START 0.009797
HIERARCH ESO ISS AMBI TAU0 END 0.009797
HIERARCH ESO ISS AMBI TEMP 13.48
HIERARCH ESO ISS AMBI FWHM START 0.39
HIERARCH ESO ISS AMBI FWHM END 0.39