Exposure
ID
PIONI.2025-09-26T01:34:15.285_1
Header ID
PIONI.2025-09-26T01:34:15.285
Date updated
2025-09-26 01:40:52 UTC+0000
Release date
2025-09-26 01:34:15 UTC+0000
UTC Start
2025-09-26 01:34:15.285
UTC End
2025-09-26 01:34:53.685
MJD Start
60944.0654546898
MJD End
60944.06589913424
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.006202
Ambient temperature (°C)
12.72
Seeing (arcsec)
0.61
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 63.1250 62.9390 125.2000 125.3000
A0-J2 97.2490 96.9510 93.7000 93.7000
A0-K0 110.3410 110.1270 70.1250 70.0860
G1-J2 54.5930 54.5340 56.4000 56.4000
G1-K0 90.4840 90.4840 35.2250 35.2250
J2-K0 44.2230 44.2340 8.7290 8.8210
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 60944.0654546898
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 63.125
HIERARCH ESO ISS PBL12 END 62.939
HIERARCH ESO ISS PBLA12 START 125.2
HIERARCH ESO ISS PBLA12 END 125.3
HIERARCH ESO ISS PBL13 START 97.249
HIERARCH ESO ISS PBL13 END 96.951
HIERARCH ESO ISS PBLA13 START 93.7
HIERARCH ESO ISS PBLA13 END 93.7
HIERARCH ESO ISS PBL14 START 110.341
HIERARCH ESO ISS PBL14 END 110.127
HIERARCH ESO ISS PBLA14 START 70.125
HIERARCH ESO ISS PBLA14 END 70.086
HIERARCH ESO ISS PBL23 START 54.593
HIERARCH ESO ISS PBL23 END 54.534
HIERARCH ESO ISS PBLA23 START 56.4
HIERARCH ESO ISS PBLA23 END 56.4
HIERARCH ESO ISS PBL24 START 90.484
HIERARCH ESO ISS PBL24 END 90.484
HIERARCH ESO ISS PBLA24 START 35.225
HIERARCH ESO ISS PBLA24 END 35.225
HIERARCH ESO ISS PBL34 START 44.223
HIERARCH ESO ISS PBL34 END 44.234
HIERARCH ESO ISS PBLA34 START 8.729
HIERARCH ESO ISS PBLA34 END 8.821
HIERARCH ESO ISS AMBI TAU0 START 0.006202
HIERARCH ESO ISS AMBI TAU0 END 0.006202
HIERARCH ESO ISS AMBI TEMP 12.72
HIERARCH ESO ISS AMBI FWHM START 0.61
HIERARCH ESO ISS AMBI FWHM END 0.61