Exposure
ID
PIONI.2025-09-26T01:35:05.258_1
Header ID
PIONI.2025-09-26T01:35:05.258
Date updated
2025-09-26 01:40:52 UTC+0000
Release date
2025-09-26 01:35:05 UTC+0000
UTC Start
2025-09-26 01:35:05.258
UTC End
2025-09-26 01:35:43.658
MJD Start
60944.066033083
MJD End
60944.06647752744
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.0066245
Ambient temperature (°C)
12.7
Seeing (arcsec)
0.585
Observation
ID
70505
Category
calibrator
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
52282
Name
HD170817
RA
277.856057
DEC
-0.28448
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 62.9310 62.7460 125.3000 125.5000
A0-J2 96.9390 96.6400 93.7000 93.7000
A0-K0 110.1180 109.9030 70.0840 70.0450
G1-J2 54.5320 54.4720 56.4000 56.3000
G1-K0 90.4840 90.4830 35.2250 35.2260
J2-K0 44.2340 44.2450 8.8250 8.9160
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.28F2.002
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE FRINGE,OBJECT
MJD-OBS 60944.066033083
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME HD170817
RA 277.856057
DEC -0.28448
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 62.931
HIERARCH ESO ISS PBL12 END 62.746
HIERARCH ESO ISS PBLA12 START 125.3
HIERARCH ESO ISS PBLA12 END 125.5
HIERARCH ESO ISS PBL13 START 96.939
HIERARCH ESO ISS PBL13 END 96.64
HIERARCH ESO ISS PBLA13 START 93.7
HIERARCH ESO ISS PBLA13 END 93.7
HIERARCH ESO ISS PBL14 START 110.118
HIERARCH ESO ISS PBL14 END 109.903
HIERARCH ESO ISS PBLA14 START 70.084
HIERARCH ESO ISS PBLA14 END 70.045
HIERARCH ESO ISS PBL23 START 54.532
HIERARCH ESO ISS PBL23 END 54.472
HIERARCH ESO ISS PBLA23 START 56.4
HIERARCH ESO ISS PBLA23 END 56.3
HIERARCH ESO ISS PBL24 START 90.484
HIERARCH ESO ISS PBL24 END 90.483
HIERARCH ESO ISS PBLA24 START 35.225
HIERARCH ESO ISS PBLA24 END 35.226
HIERARCH ESO ISS PBL34 START 44.234
HIERARCH ESO ISS PBL34 END 44.245
HIERARCH ESO ISS PBLA34 START 8.825
HIERARCH ESO ISS PBLA34 END 8.916
HIERARCH ESO ISS AMBI TAU0 START 0.006202
HIERARCH ESO ISS AMBI TAU0 END 0.007047
HIERARCH ESO ISS AMBI TEMP 12.7
HIERARCH ESO ISS AMBI FWHM START 0.61
HIERARCH ESO ISS AMBI FWHM END 0.56