Exposure
ID
PIONI.2025-10-14T02:54:07.656_1
Header ID
PIONI.2025-10-14T02:54:07.656
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 02:54:07.657
UTC End
2025-10-14 02:54:46.057
MJD Start
60962.120921954
MJD End
60962.121366398445
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.004757
Ambient temperature (°C)
11.21
Seeing (arcsec)
0.645
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 48.0410 48.0260 142.7000 142.6000
A0-J2 100.8470 101.1090 106.0000 105.9000
A0-J6 109.0880 109.1360 6.2740 6.4510
B5-J2 68.5760 68.8710 81.3000 81.3000
B5-J6 147.6380 147.5840 353.3050 353.4320
J2-J6 160.6150 160.5270 328.0520 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 60962.120921954
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 48.041
HIERARCH ESO ISS PBL12 END 48.026
HIERARCH ESO ISS PBLA12 START 142.7
HIERARCH ESO ISS PBLA12 END 142.6
HIERARCH ESO ISS PBL13 START 100.847
HIERARCH ESO ISS PBL13 END 101.109
HIERARCH ESO ISS PBLA13 START 106.0
HIERARCH ESO ISS PBLA13 END 105.9
HIERARCH ESO ISS PBL14 START 109.088
HIERARCH ESO ISS PBL14 END 109.136
HIERARCH ESO ISS PBLA14 START 6.274
HIERARCH ESO ISS PBLA14 END 6.451
HIERARCH ESO ISS PBL23 START 68.576
HIERARCH ESO ISS PBL23 END 68.871
HIERARCH ESO ISS PBLA23 START 81.3
HIERARCH ESO ISS PBLA23 END 81.3
HIERARCH ESO ISS PBL24 START 147.638
HIERARCH ESO ISS PBL24 END 147.584
HIERARCH ESO ISS PBLA24 START 353.305
HIERARCH ESO ISS PBLA24 END 353.432
HIERARCH ESO ISS PBL34 START 160.615
HIERARCH ESO ISS PBL34 END 160.527
HIERARCH ESO ISS PBLA34 START 328.052
HIERARCH ESO ISS PBLA34 END 328.05
HIERARCH ESO ISS AMBI TAU0 START 0.004295
HIERARCH ESO ISS AMBI TAU0 END 0.005219
HIERARCH ESO ISS AMBI TEMP 11.21
HIERARCH ESO ISS AMBI FWHM START 0.68
HIERARCH ESO ISS AMBI FWHM END 0.61