Exposure
ID
PIONI.2025-09-22T01:53:14.482_1
Header ID
PIONI.2025-09-22T01:53:14.482
Date updated
2025-09-22 02:00:48 UTC+0000
Release date
2025-09-22 01:53:14 UTC+0000
UTC Start
2025-09-22 01:53:14.482
UTC End
2025-09-22 01:53:52.882
MJD Start
60940.0786398426
MJD End
60940.07908428704
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.003975
Ambient temperature (°C)
11.62
Seeing (arcsec)
0.56
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 62.4250 62.2350 125.9000 126.0000
A0-J2 95.9650 95.6550 93.8000 93.9000
A0-K0 109.3410 109.1170 70.0430 70.0020
G1-J2 54.3010 54.2380 56.3000 56.2000
G1-K0 90.4790 90.4760 35.2260 35.2260
J2-K0 44.3260 44.3380 9.1140 9.2070
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 60940.0786398426
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 62.425
HIERARCH ESO ISS PBL12 END 62.235
HIERARCH ESO ISS PBLA12 START 125.9
HIERARCH ESO ISS PBLA12 END 126.0
HIERARCH ESO ISS PBL13 START 95.965
HIERARCH ESO ISS PBL13 END 95.655
HIERARCH ESO ISS PBLA13 START 93.8
HIERARCH ESO ISS PBLA13 END 93.9
HIERARCH ESO ISS PBL14 START 109.341
HIERARCH ESO ISS PBL14 END 109.117
HIERARCH ESO ISS PBLA14 START 70.043
HIERARCH ESO ISS PBLA14 END 70.002
HIERARCH ESO ISS PBL23 START 54.301
HIERARCH ESO ISS PBL23 END 54.238
HIERARCH ESO ISS PBLA23 START 56.3
HIERARCH ESO ISS PBLA23 END 56.2
HIERARCH ESO ISS PBL24 START 90.479
HIERARCH ESO ISS PBL24 END 90.476
HIERARCH ESO ISS PBLA24 START 35.226
HIERARCH ESO ISS PBLA24 END 35.226
HIERARCH ESO ISS PBL34 START 44.326
HIERARCH ESO ISS PBL34 END 44.338
HIERARCH ESO ISS PBLA34 START 9.114
HIERARCH ESO ISS PBLA34 END 9.207
HIERARCH ESO ISS AMBI TAU0 START 0.003975
HIERARCH ESO ISS AMBI TAU0 END 0.003975
HIERARCH ESO ISS AMBI TEMP 11.62
HIERARCH ESO ISS AMBI FWHM START 0.56
HIERARCH ESO ISS AMBI FWHM END 0.56