Exposure
ID
PIONI.2025-07-21T08:20:46.829_1
Header ID
PIONI.2025-07-21T08:20:46.829
Date updated
2025-07-21 08:25:49 UTC+0000
Release date
2026-07-21 08:25:49 UTC+0000
UTC Start
2025-07-21 08:20:46.830
UTC End
2025-07-21 08:21:12.430
MJD Start
60877.3477642341
MJD End
60877.3480605304
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.00491
Ambient temperature (°C)
14.76
Seeing (arcsec)
0.7
Observation
ID
68903
Category
science
Program ID
115.285P.001
Program Title
A SUB-PERCENT GEOMETRICAL LMC DISTANCE MEASUREMENT
Program Type
Normal
PI / COI
PIETRZYNSKI / GALLENNE / GRACZYK / HAJDU / GIEREN
Target
ID
51266
Name
HIP18401
RA
59.015015
DEC
-63.46352
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 65.8240 65.8790 48.7000 48.9000
A0-J2 115.9660 115.9990 29.5000 29.7000
A0-K0 126.6250 126.6310 16.3310 16.4750
G1-J2 58.0070 58.0060 7.6000 7.7000
G1-K0 79.3210 79.3300 349.9360 350.0340
J2-K0 29.7930 29.8260 313.7510 313.8250
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.285P.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE FRINGE,OBJECT
MJD-OBS 60877.3477642341
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME HIP18401
RA 59.015015
DEC -63.46352
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 0.0005
HIERARCH ESO DET NDIT 51200
HIERARCH ESO ISS PBL12 START 65.824
HIERARCH ESO ISS PBL12 END 65.879
HIERARCH ESO ISS PBLA12 START 48.7
HIERARCH ESO ISS PBLA12 END 48.9
HIERARCH ESO ISS PBL13 START 115.966
HIERARCH ESO ISS PBL13 END 115.999
HIERARCH ESO ISS PBLA13 START 29.5
HIERARCH ESO ISS PBLA13 END 29.7
HIERARCH ESO ISS PBL14 START 126.625
HIERARCH ESO ISS PBL14 END 126.631
HIERARCH ESO ISS PBLA14 START 16.331
HIERARCH ESO ISS PBLA14 END 16.475
HIERARCH ESO ISS PBL23 START 58.007
HIERARCH ESO ISS PBL23 END 58.006
HIERARCH ESO ISS PBLA23 START 7.6
HIERARCH ESO ISS PBLA23 END 7.7
HIERARCH ESO ISS PBL24 START 79.321
HIERARCH ESO ISS PBL24 END 79.33
HIERARCH ESO ISS PBLA24 START 349.936
HIERARCH ESO ISS PBLA24 END 350.034
HIERARCH ESO ISS PBL34 START 29.793
HIERARCH ESO ISS PBL34 END 29.826
HIERARCH ESO ISS PBLA34 START 313.751
HIERARCH ESO ISS PBLA34 END 313.825
HIERARCH ESO ISS AMBI TAU0 START 0.00491
HIERARCH ESO ISS AMBI TAU0 END 0.00491
HIERARCH ESO ISS AMBI TEMP 14.76
HIERARCH ESO ISS AMBI FWHM START 0.7
HIERARCH ESO ISS AMBI FWHM END 0.7