Exposure
ID
PIONI.2021-11-13T07:20:13.733_1
Header ID
PIONI.2021-11-13T07:20:13.733
Date updated
2021-11-13 07:25:59 UTC+0000
Release date
2022-11-13 07:25:59 UTC+0000
UTC Start
2021-11-13 07:20:13.733
UTC End
2021-11-13 07:20:39.333
MJD Start
59531.3057144978
MJD End
59531.3060107941
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.005725
Ambient temperature (°C)
13.15
Seeing (arcsec)
0.44
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 70.2180 70.1090 130.9000 131.0000
A0-J2 100.8070 100.6070 101.0000 101.0000
A0-J3 125.2310 125.1430 51.6970 51.6900
G1-J2 53.1600 53.1060 59.7000 59.7000
G1-J3 131.6580 131.6700 20.0930 20.1320
J2-J3 96.8610 96.8600 359.5910 359.6740
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 59531.3057144978
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 70.218
HIERARCH ESO ISS PBL12 END 70.109
HIERARCH ESO ISS PBLA12 START 130.9
HIERARCH ESO ISS PBLA12 END 131.0
HIERARCH ESO ISS PBL13 START 100.807
HIERARCH ESO ISS PBL13 END 100.607
HIERARCH ESO ISS PBLA13 START 101.0
HIERARCH ESO ISS PBLA13 END 101.0
HIERARCH ESO ISS PBL14 START 125.231
HIERARCH ESO ISS PBL14 END 125.143
HIERARCH ESO ISS PBLA14 START 51.697
HIERARCH ESO ISS PBLA14 END 51.69
HIERARCH ESO ISS PBL23 START 53.16
HIERARCH ESO ISS PBL23 END 53.106
HIERARCH ESO ISS PBLA23 START 59.7
HIERARCH ESO ISS PBLA23 END 59.7
HIERARCH ESO ISS PBL24 START 131.658
HIERARCH ESO ISS PBL24 END 131.67
HIERARCH ESO ISS PBLA24 START 20.093
HIERARCH ESO ISS PBLA24 END 20.132
HIERARCH ESO ISS PBL34 START 96.861
HIERARCH ESO ISS PBL34 END 96.86
HIERARCH ESO ISS PBLA34 START 359.591
HIERARCH ESO ISS PBLA34 END 359.674
HIERARCH ESO ISS AMBI TAU0 START 0.005725
HIERARCH ESO ISS AMBI TAU0 END 0.005725
HIERARCH ESO ISS AMBI TEMP 13.15
HIERARCH ESO ISS AMBI FWHM START 0.44
HIERARCH ESO ISS AMBI FWHM END 0.44