Exposure
ID
PIONI.2021-10-29T04:03:44.931_1
Header ID
PIONI.2021-10-29T04:03:44.931
Date updated
2021-10-29 04:11:20 UTC+0000
Release date
2021-10-29 04:03:44 UTC+0000
UTC Start
2021-10-29 04:03:44.932
UTC End
2021-10-29 04:04:10.532
MJD Start
59516.1692700423
MJD End
59516.1695663386
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0043425
Ambient temperature (°C)
13.37
Seeing (arcsec)
0.49
Observation
ID
48671
Category
calibrator
Program ID
108.227F.001
Program Title
THE FIRST INTERFEROMETRIC IMAGE OF A SUNLIKE STAR: EPS ERIDANI
Program Type
Normal
PI / COI
ROETTENBACHER/ KORHONEN/ FISCHER/ DAVIES
Target
ID
36451
Name
bet Eri
RA
76.960918
DEC
-5.08681
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
A0 B2 D0 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B2 24.1010 24.1150 137.1000 137.1000
A0-D0 20.2990 20.3520 54.8000 55.0000
A0-C1 18.2530 18.2850 115.5700 115.5360
B2-D0 29.3390 29.3400 0.4000 0.5000
B2-C1 9.7760 9.7760 0.3240 0.4240
D0-C1 19.5630 19.5630 180.3770 180.4770
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 108.227F.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE FRINGE,OBJECT
MJD-OBS 59516.1692700423
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME bet Eri
RA 76.960918
DEC -5.08681
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 B2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 25.6
HIERARCH ESO DET DIT 0.0005
HIERARCH ESO DET NDIT 51200
HIERARCH ESO ISS PBL12 START 24.101
HIERARCH ESO ISS PBL12 END 24.115
HIERARCH ESO ISS PBLA12 START 137.1
HIERARCH ESO ISS PBLA12 END 137.1
HIERARCH ESO ISS PBL13 START 20.299
HIERARCH ESO ISS PBL13 END 20.352
HIERARCH ESO ISS PBLA13 START 54.8
HIERARCH ESO ISS PBLA13 END 55.0
HIERARCH ESO ISS PBL14 START 18.253
HIERARCH ESO ISS PBL14 END 18.285
HIERARCH ESO ISS PBLA14 START 115.57
HIERARCH ESO ISS PBLA14 END 115.536
HIERARCH ESO ISS PBL23 START 29.339
HIERARCH ESO ISS PBL23 END 29.34
HIERARCH ESO ISS PBLA23 START 0.4
HIERARCH ESO ISS PBLA23 END 0.5
HIERARCH ESO ISS PBL24 START 9.776
HIERARCH ESO ISS PBL24 END 9.776
HIERARCH ESO ISS PBLA24 START 0.324
HIERARCH ESO ISS PBLA24 END 0.424
HIERARCH ESO ISS PBL34 START 19.563
HIERARCH ESO ISS PBL34 END 19.563
HIERARCH ESO ISS PBLA34 START 180.377
HIERARCH ESO ISS PBLA34 END 180.477
HIERARCH ESO ISS AMBI TAU0 START 0.004739
HIERARCH ESO ISS AMBI TAU0 END 0.003946
HIERARCH ESO ISS AMBI TEMP 13.37
HIERARCH ESO ISS AMBI FWHM START 0.45
HIERARCH ESO ISS AMBI FWHM END 0.53