Exposure
ID
PIONI.2025-09-20T04:24:25.186_1
Header ID
PIONI.2025-09-20T04:24:25.186
Date updated
2025-09-20 04:30:54 UTC+0000
Release date
2026-09-20 04:30:54 UTC+0000
UTC Start
2025-09-20 04:24:25.187
UTC End
2025-09-20 04:25:03.587
MJD Start
60938.183624845
MJD End
60938.18406928944
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.002255
Ambient temperature (°C)
14.02
Seeing (arcsec)
0.76
Observation
ID
70469
Category
science
Program ID
115.28F2.002
Program Title
WEIGHING THE STARS: HIGH-PRECISION MASSES OF F-TYPE MAIN-SEQUENCE BINARIES
Program Type
Normal
PI / COI
JONAK / MOURARD / NARDETTO / MEILLAND / BROZ
Target
ID
52255
Name
zetHor
RA
40.163467
DEC
-54.54988
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
A0 G1 J2 K0
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 70.9200 71.0330 76.5000 76.6000
A0-J2 115.9790 116.0740 53.0000 53.2000
A0-K0 125.2320 125.2640 35.5110 35.6960
G1-J2 58.2240 58.2240 24.0000 24.2000
G1-K0 85.4190 85.4160 2.5510 2.6740
J2-K0 37.7950 37.8280 328.2670 328.3500
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.28F2.002
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE FRINGE,OBJECT
MJD-OBS 60938.183624845
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME zetHor
RA 40.163467
DEC -54.54988
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 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 K0
HIERARCH ESO DET DIT 0.00075
HIERARCH ESO DET NDIT 51200
HIERARCH ESO ISS PBL12 START 70.92
HIERARCH ESO ISS PBL12 END 71.033
HIERARCH ESO ISS PBLA12 START 76.5
HIERARCH ESO ISS PBLA12 END 76.6
HIERARCH ESO ISS PBL13 START 115.979
HIERARCH ESO ISS PBL13 END 116.074
HIERARCH ESO ISS PBLA13 START 53.0
HIERARCH ESO ISS PBLA13 END 53.2
HIERARCH ESO ISS PBL14 START 125.232
HIERARCH ESO ISS PBL14 END 125.264
HIERARCH ESO ISS PBLA14 START 35.511
HIERARCH ESO ISS PBLA14 END 35.696
HIERARCH ESO ISS PBL23 START 58.224
HIERARCH ESO ISS PBL23 END 58.224
HIERARCH ESO ISS PBLA23 START 24.0
HIERARCH ESO ISS PBLA23 END 24.2
HIERARCH ESO ISS PBL24 START 85.419
HIERARCH ESO ISS PBL24 END 85.416
HIERARCH ESO ISS PBLA24 START 2.551
HIERARCH ESO ISS PBLA24 END 2.674
HIERARCH ESO ISS PBL34 START 37.795
HIERARCH ESO ISS PBL34 END 37.828
HIERARCH ESO ISS PBLA34 START 328.267
HIERARCH ESO ISS PBLA34 END 328.35
HIERARCH ESO ISS AMBI TAU0 START 0.002255
HIERARCH ESO ISS AMBI TAU0 END 0.002255
HIERARCH ESO ISS AMBI TEMP 14.02
HIERARCH ESO ISS AMBI FWHM START 0.75
HIERARCH ESO ISS AMBI FWHM END 0.77