Exposure
ID
PIONI.2025-09-21T01:57:05.162_1
Header ID
PIONI.2025-09-21T01:57:05.162
Date updated
2025-09-21 02:05:51 UTC+0000
Release date
2025-09-21 01:57:05 UTC+0000
UTC Start
2025-09-21 01:57:05.162
UTC End
2025-09-21 01:57:43.562
MJD Start
60939.0813097483
MJD End
60939.08175419274
Exposure time (s)
38.4
Validation level
1
Tau 0: Coherence time (s)
0.002404
Ambient temperature (°C)
12.16
Seeing (arcsec)
0.62
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 62.4480 62.2620 125.9000 126.0000
A0-J2 96.0020 95.6990 93.8000 93.9000
A0-K0 109.3680 109.1490 70.0480 70.0070
G1-J2 54.3080 54.2470 56.3000 56.2000
G1-K0 90.4790 90.4770 35.2260 35.2260
J2-K0 44.3250 44.3360 9.1030 9.1940
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 60939.0813097483
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 62.448
HIERARCH ESO ISS PBL12 END 62.262
HIERARCH ESO ISS PBLA12 START 125.9
HIERARCH ESO ISS PBLA12 END 126.0
HIERARCH ESO ISS PBL13 START 96.002
HIERARCH ESO ISS PBL13 END 95.699
HIERARCH ESO ISS PBLA13 START 93.8
HIERARCH ESO ISS PBLA13 END 93.9
HIERARCH ESO ISS PBL14 START 109.368
HIERARCH ESO ISS PBL14 END 109.149
HIERARCH ESO ISS PBLA14 START 70.048
HIERARCH ESO ISS PBLA14 END 70.007
HIERARCH ESO ISS PBL23 START 54.308
HIERARCH ESO ISS PBL23 END 54.247
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 90.477
HIERARCH ESO ISS PBLA24 START 35.226
HIERARCH ESO ISS PBLA24 END 35.226
HIERARCH ESO ISS PBL34 START 44.325
HIERARCH ESO ISS PBL34 END 44.336
HIERARCH ESO ISS PBLA34 START 9.103
HIERARCH ESO ISS PBLA34 END 9.194
HIERARCH ESO ISS AMBI TAU0 START 0.002404
HIERARCH ESO ISS AMBI TAU0 END 0.002404
HIERARCH ESO ISS AMBI TEMP 12.16
HIERARCH ESO ISS AMBI FWHM START 0.62
HIERARCH ESO ISS AMBI FWHM END 0.62