Exposure
ID
PIONI.2025-09-21T01:53:43.124_1
Header ID
PIONI.2025-09-21T01:53:43.124
Date updated
2025-09-21 02:01:04 UTC+0000
Release date
2025-09-21 01:53:43 UTC+0000
UTC Start
2025-09-21 01:53:43.124
UTC End
2025-09-21 01:54:21.524
MJD Start
60939.078971345
MJD End
60939.07941578944
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.002198
Ambient temperature (°C)
12.2
Seeing (arcsec)
0.72
Observation
ID
70478
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
52261
Name
HD170785
RA
277.803512
DEC
-0.44419
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 63.2270 63.0430 125.3000 125.5000
A0-J2 97.2620 96.9650 93.8000 93.8000
A0-K0 110.2780 110.0630 70.2130 70.1740
G1-J2 54.5620 54.5020 56.5000 56.4000
G1-K0 90.4840 90.4830 35.2240 35.2250
J2-K0 44.2790 44.2900 8.7180 8.8100
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 60939.078971345
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME HD170785
RA 277.803512
DEC -0.44419
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 63.227
HIERARCH ESO ISS PBL12 END 63.043
HIERARCH ESO ISS PBLA12 START 125.3
HIERARCH ESO ISS PBLA12 END 125.5
HIERARCH ESO ISS PBL13 START 97.262
HIERARCH ESO ISS PBL13 END 96.965
HIERARCH ESO ISS PBLA13 START 93.8
HIERARCH ESO ISS PBLA13 END 93.8
HIERARCH ESO ISS PBL14 START 110.278
HIERARCH ESO ISS PBL14 END 110.063
HIERARCH ESO ISS PBLA14 START 70.213
HIERARCH ESO ISS PBLA14 END 70.174
HIERARCH ESO ISS PBL23 START 54.562
HIERARCH ESO ISS PBL23 END 54.502
HIERARCH ESO ISS PBLA23 START 56.5
HIERARCH ESO ISS PBLA23 END 56.4
HIERARCH ESO ISS PBL24 START 90.484
HIERARCH ESO ISS PBL24 END 90.483
HIERARCH ESO ISS PBLA24 START 35.224
HIERARCH ESO ISS PBLA24 END 35.225
HIERARCH ESO ISS PBL34 START 44.279
HIERARCH ESO ISS PBL34 END 44.29
HIERARCH ESO ISS PBLA34 START 8.718
HIERARCH ESO ISS PBLA34 END 8.81
HIERARCH ESO ISS AMBI TAU0 START 0.002198
HIERARCH ESO ISS AMBI TAU0 END 0.002198
HIERARCH ESO ISS AMBI TEMP 12.2
HIERARCH ESO ISS AMBI FWHM START 0.72
HIERARCH ESO ISS AMBI FWHM END 0.72