Exposure
ID
PIONI.2025-07-21T08:22:39.048_1
Header ID
PIONI.2025-07-21T08:22:39.048
Date updated
2025-07-21 08:31:02 UTC+0000
Release date
2026-07-21 08:31:02 UTC+0000
UTC Start
2025-07-21 08:22:39.047
UTC End
2025-07-21 08:23:04.647
MJD Start
60877.3490630486
MJD End
60877.349359344895
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.003998
Ambient temperature (°C)
14.76
Seeing (arcsec)
0.77
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 65.9950 66.0500 49.3000 49.5000
A0-J2 116.0690 116.1030 30.0000 30.2000
A0-K0 126.6440 126.6510 16.7780 16.9240
G1-J2 58.0050 58.0040 8.0000 8.1000
G1-K0 79.3480 79.3570 350.2410 350.3410
J2-K0 29.8950 29.9270 313.9820 314.0580
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 60877.3490630486
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 65.995
HIERARCH ESO ISS PBL12 END 66.05
HIERARCH ESO ISS PBLA12 START 49.3
HIERARCH ESO ISS PBLA12 END 49.5
HIERARCH ESO ISS PBL13 START 116.069
HIERARCH ESO ISS PBL13 END 116.103
HIERARCH ESO ISS PBLA13 START 30.0
HIERARCH ESO ISS PBLA13 END 30.2
HIERARCH ESO ISS PBL14 START 126.644
HIERARCH ESO ISS PBL14 END 126.651
HIERARCH ESO ISS PBLA14 START 16.778
HIERARCH ESO ISS PBLA14 END 16.924
HIERARCH ESO ISS PBL23 START 58.005
HIERARCH ESO ISS PBL23 END 58.004
HIERARCH ESO ISS PBLA23 START 8.0
HIERARCH ESO ISS PBLA23 END 8.1
HIERARCH ESO ISS PBL24 START 79.348
HIERARCH ESO ISS PBL24 END 79.357
HIERARCH ESO ISS PBLA24 START 350.241
HIERARCH ESO ISS PBLA24 END 350.341
HIERARCH ESO ISS PBL34 START 29.895
HIERARCH ESO ISS PBL34 END 29.927
HIERARCH ESO ISS PBLA34 START 313.982
HIERARCH ESO ISS PBLA34 END 314.058
HIERARCH ESO ISS AMBI TAU0 START 0.00491
HIERARCH ESO ISS AMBI TAU0 END 0.003086
HIERARCH ESO ISS AMBI TEMP 14.76
HIERARCH ESO ISS AMBI FWHM START 0.77
HIERARCH ESO ISS AMBI FWHM END 0.77