Exposure
ID
PIONI.2021-11-02T04:10:01.880_1
Header ID
PIONI.2021-11-02T04:10:01.880
Date updated
2021-11-02 04:15:57 UTC+0000
Release date
2022-11-02 04:15:57 UTC+0000
UTC Start
2021-11-02 04:10:01.880
UTC End
2021-11-02 04:10:27.480
MJD Start
59520.1736328686
MJD End
59520.1739291649
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.003952
Ambient temperature (°C)
11.54
Seeing (arcsec)
0.785
Observation
ID
48709
Category
science
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
36480
Name
eps Eri
RA
53.226763
DEC
-9.45816
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 25.2970 25.2980 136.9000 136.9000
A0-D0 29.4360 29.4660 66.7000 66.7000
A0-C1 22.1930 22.2030 112.3000 112.3130
B2-D0 31.6500 31.6600 17.9000 18.0000
B2-C1 10.5440 10.5470 17.8500 17.9290
D0-C1 21.1060 21.1130 197.9160 197.9950
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 108.227F.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE FRINGE,OBJECT
MJD-OBS 59520.1736328686
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.226763
DEC -9.45816
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 25.297
HIERARCH ESO ISS PBL12 END 25.298
HIERARCH ESO ISS PBLA12 START 136.9
HIERARCH ESO ISS PBLA12 END 136.9
HIERARCH ESO ISS PBL13 START 29.436
HIERARCH ESO ISS PBL13 END 29.466
HIERARCH ESO ISS PBLA13 START 66.7
HIERARCH ESO ISS PBLA13 END 66.7
HIERARCH ESO ISS PBL14 START 22.193
HIERARCH ESO ISS PBL14 END 22.203
HIERARCH ESO ISS PBLA14 START 112.3
HIERARCH ESO ISS PBLA14 END 112.313
HIERARCH ESO ISS PBL23 START 31.65
HIERARCH ESO ISS PBL23 END 31.66
HIERARCH ESO ISS PBLA23 START 17.9
HIERARCH ESO ISS PBLA23 END 18.0
HIERARCH ESO ISS PBL24 START 10.544
HIERARCH ESO ISS PBL24 END 10.547
HIERARCH ESO ISS PBLA24 START 17.85
HIERARCH ESO ISS PBLA24 END 17.929
HIERARCH ESO ISS PBL34 START 21.106
HIERARCH ESO ISS PBL34 END 21.113
HIERARCH ESO ISS PBLA34 START 197.916
HIERARCH ESO ISS PBLA34 END 197.995
HIERARCH ESO ISS AMBI TAU0 START 0.003987
HIERARCH ESO ISS AMBI TAU0 END 0.003917
HIERARCH ESO ISS AMBI TEMP 11.54
HIERARCH ESO ISS AMBI FWHM START 0.76
HIERARCH ESO ISS AMBI FWHM END 0.81