Exposure
ID
PIONI.2025-10-15T02:54:22.006_1
Header ID
PIONI.2025-10-15T02:54:22.006
Date updated
2025-10-15 03:01:27 UTC+0000
Release date
2026-10-15 03:01:27 UTC+0000
UTC Start
2025-10-15 02:54:22.006
UTC End
2025-10-15 02:55:00.406
MJD Start
60963.121088027
MJD End
60963.12153247144
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.003003
Ambient temperature (°C)
12.44
Seeing (arcsec)
0.71
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 47.9560 47.9390 142.5000 142.5000
A0-J2 102.1980 102.4610 105.6000 105.5000
A0-J6 109.3530 109.4100 7.1900 7.3720
B5-J2 70.1020 70.3990 81.2000 81.2000
B5-J6 147.3670 147.3180 353.9670 354.1010
J2-J6 160.1500 160.0570 328.0450 328.0480
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 60963.121088027
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 47.956
HIERARCH ESO ISS PBL12 END 47.939
HIERARCH ESO ISS PBLA12 START 142.5
HIERARCH ESO ISS PBLA12 END 142.5
HIERARCH ESO ISS PBL13 START 102.198
HIERARCH ESO ISS PBL13 END 102.461
HIERARCH ESO ISS PBLA13 START 105.6
HIERARCH ESO ISS PBLA13 END 105.5
HIERARCH ESO ISS PBL14 START 109.353
HIERARCH ESO ISS PBL14 END 109.41
HIERARCH ESO ISS PBLA14 START 7.19
HIERARCH ESO ISS PBLA14 END 7.372
HIERARCH ESO ISS PBL23 START 70.102
HIERARCH ESO ISS PBL23 END 70.399
HIERARCH ESO ISS PBLA23 START 81.2
HIERARCH ESO ISS PBLA23 END 81.2
HIERARCH ESO ISS PBL24 START 147.367
HIERARCH ESO ISS PBL24 END 147.318
HIERARCH ESO ISS PBLA24 START 353.967
HIERARCH ESO ISS PBLA24 END 354.101
HIERARCH ESO ISS PBL34 START 160.15
HIERARCH ESO ISS PBL34 END 160.057
HIERARCH ESO ISS PBLA34 START 328.045
HIERARCH ESO ISS PBLA34 END 328.048
HIERARCH ESO ISS AMBI TAU0 START 0.003003
HIERARCH ESO ISS AMBI TAU0 END 0.003003
HIERARCH ESO ISS AMBI TEMP 12.44
HIERARCH ESO ISS AMBI FWHM START 0.78
HIERARCH ESO ISS AMBI FWHM END 0.64