Exposure
ID
PIONI.2025-09-25T02:01:57.960_1
Header ID
PIONI.2025-09-25T02:01:57.960
Date updated
2025-09-25 02:10:57 UTC+0000
Release date
2025-09-25 02:01:57 UTC+0000
UTC Start
2025-09-25 02:01:57.960
UTC End
2025-09-25 02:02:36.360
MJD Start
60943.0846986114
MJD End
60943.08514305584
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.0093595
Ambient temperature (°C)
17.43
Seeing (arcsec)
0.475
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 57.5380 57.3490 129.3000 129.4000
A0-J2 87.9080 87.5770 94.1000 94.1000
A0-K0 103.5110 103.2650 68.7820 68.7300
G1-J2 52.6520 52.5810 55.0000 55.0000
G1-K0 90.3230 90.3120 35.1070 35.0980
J2-K0 44.5850 44.5980 11.3850 11.4710
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 60943.0846986114
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 57.538
HIERARCH ESO ISS PBL12 END 57.349
HIERARCH ESO ISS PBLA12 START 129.3
HIERARCH ESO ISS PBLA12 END 129.4
HIERARCH ESO ISS PBL13 START 87.908
HIERARCH ESO ISS PBL13 END 87.577
HIERARCH ESO ISS PBLA13 START 94.1
HIERARCH ESO ISS PBLA13 END 94.1
HIERARCH ESO ISS PBL14 START 103.511
HIERARCH ESO ISS PBL14 END 103.265
HIERARCH ESO ISS PBLA14 START 68.782
HIERARCH ESO ISS PBLA14 END 68.73
HIERARCH ESO ISS PBL23 START 52.652
HIERARCH ESO ISS PBL23 END 52.581
HIERARCH ESO ISS PBLA23 START 55.0
HIERARCH ESO ISS PBLA23 END 55.0
HIERARCH ESO ISS PBL24 START 90.323
HIERARCH ESO ISS PBL24 END 90.312
HIERARCH ESO ISS PBLA24 START 35.107
HIERARCH ESO ISS PBLA24 END 35.098
HIERARCH ESO ISS PBL34 START 44.585
HIERARCH ESO ISS PBL34 END 44.598
HIERARCH ESO ISS PBLA34 START 11.385
HIERARCH ESO ISS PBLA34 END 11.471
HIERARCH ESO ISS AMBI TAU0 START 0.009541
HIERARCH ESO ISS AMBI TAU0 END 0.009178
HIERARCH ESO ISS AMBI TEMP 17.43
HIERARCH ESO ISS AMBI FWHM START 0.5
HIERARCH ESO ISS AMBI FWHM END 0.45