Exposure
ID
PIONI.2025-10-14T02:53:16.999_1
Header ID
PIONI.2025-10-14T02:53:16.999
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 02:53:16.999
UTC End
2025-10-14 02:53:55.399
MJD Start
60962.1203356353
MJD End
60962.12078007974
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.004295
Ambient temperature (°C)
11.23
Seeing (arcsec)
0.68
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 48.0580 48.0420 142.7000 142.7000
A0-J2 100.5680 100.8360 106.1000 106.0000
A0-J6 109.0380 109.0860 6.0890 6.2670
B5-J2 68.2610 68.5640 81.3000 81.3000
B5-J6 147.6960 147.6400 353.1740 353.3000
J2-J6 160.7080 160.6180 328.0570 328.0520
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 60962.1203356353
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 48.058
HIERARCH ESO ISS PBL12 END 48.042
HIERARCH ESO ISS PBLA12 START 142.7
HIERARCH ESO ISS PBLA12 END 142.7
HIERARCH ESO ISS PBL13 START 100.568
HIERARCH ESO ISS PBL13 END 100.836
HIERARCH ESO ISS PBLA13 START 106.1
HIERARCH ESO ISS PBLA13 END 106.0
HIERARCH ESO ISS PBL14 START 109.038
HIERARCH ESO ISS PBL14 END 109.086
HIERARCH ESO ISS PBLA14 START 6.089
HIERARCH ESO ISS PBLA14 END 6.267
HIERARCH ESO ISS PBL23 START 68.261
HIERARCH ESO ISS PBL23 END 68.564
HIERARCH ESO ISS PBLA23 START 81.3
HIERARCH ESO ISS PBLA23 END 81.3
HIERARCH ESO ISS PBL24 START 147.696
HIERARCH ESO ISS PBL24 END 147.64
HIERARCH ESO ISS PBLA24 START 353.174
HIERARCH ESO ISS PBLA24 END 353.3
HIERARCH ESO ISS PBL34 START 160.708
HIERARCH ESO ISS PBL34 END 160.618
HIERARCH ESO ISS PBLA34 START 328.057
HIERARCH ESO ISS PBLA34 END 328.052
HIERARCH ESO ISS AMBI TAU0 START 0.004295
HIERARCH ESO ISS AMBI TAU0 END 0.004295
HIERARCH ESO ISS AMBI TEMP 11.23
HIERARCH ESO ISS AMBI FWHM START 0.68
HIERARCH ESO ISS AMBI FWHM END 0.68