Exposure
ID
PIONI.2021-11-12T04:54:07.111_1
Header ID
PIONI.2021-11-12T04:54:07.111
Date updated
2021-11-12 05:01:13 UTC+0000
Release date
2022-11-12 05:01:13 UTC+0000
UTC Start
2021-11-12 04:54:07.111
UTC End
2021-11-12 04:54:32.711
MJD Start
59530.2042489666
MJD End
59530.2045452629
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.003818
Ambient temperature (°C)
12.78
Seeing (arcsec)
0.675
Observation
ID
48855
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
36582
Name
eps Eri
RA
53.227319
DEC
-9.45816
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
A0 G1 J2 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 89.6980 89.6690 115.5000 115.5000
A0-J2 129.1650 129.1530 92.9000 92.9000
A0-J3 130.5400 130.5830 47.3680 47.4090
G1-J2 57.7050 57.7220 56.3000 56.4000
G1-J3 127.8820 127.8920 6.7620 6.8270
J2-J3 100.5460 100.5230 340.8650 340.9260
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 59530.2042489666
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.227319
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 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 J3
EXPTIME 25.6
HIERARCH ESO DET DIT 0.0005
HIERARCH ESO DET NDIT 51200
HIERARCH ESO ISS PBL12 START 89.698
HIERARCH ESO ISS PBL12 END 89.669
HIERARCH ESO ISS PBLA12 START 115.5
HIERARCH ESO ISS PBLA12 END 115.5
HIERARCH ESO ISS PBL13 START 129.165
HIERARCH ESO ISS PBL13 END 129.153
HIERARCH ESO ISS PBLA13 START 92.9
HIERARCH ESO ISS PBLA13 END 92.9
HIERARCH ESO ISS PBL14 START 130.54
HIERARCH ESO ISS PBL14 END 130.583
HIERARCH ESO ISS PBLA14 START 47.368
HIERARCH ESO ISS PBLA14 END 47.409
HIERARCH ESO ISS PBL23 START 57.705
HIERARCH ESO ISS PBL23 END 57.722
HIERARCH ESO ISS PBLA23 START 56.3
HIERARCH ESO ISS PBLA23 END 56.4
HIERARCH ESO ISS PBL24 START 127.882
HIERARCH ESO ISS PBL24 END 127.892
HIERARCH ESO ISS PBLA24 START 6.762
HIERARCH ESO ISS PBLA24 END 6.827
HIERARCH ESO ISS PBL34 START 100.546
HIERARCH ESO ISS PBL34 END 100.523
HIERARCH ESO ISS PBLA34 START 340.865
HIERARCH ESO ISS PBLA34 END 340.926
HIERARCH ESO ISS AMBI TAU0 START 0.003818
HIERARCH ESO ISS AMBI TAU0 END 0.003818
HIERARCH ESO ISS AMBI TEMP 12.78
HIERARCH ESO ISS AMBI FWHM START 0.66
HIERARCH ESO ISS AMBI FWHM END 0.69