Exposure
ID
PIONI.2021-11-09T05:45:10.184_1
Header ID
PIONI.2021-11-09T05:45:10.184
Date updated
2021-11-09 05:50:30 UTC+0000
Release date
2022-11-09 05:50:30 UTC+0000
UTC Start
2021-11-09 05:45:10.183
UTC End
2021-11-09 05:45:35.783
MJD Start
59527.239701197
MJD End
59527.2399974933
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0036295
Ambient temperature (°C)
12.21
Seeing (arcsec)
0.735
Observation
ID
48833
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
36571
Name
eps Eri
RA
53.227321
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 86.8500 86.7910 118.0000 118.1000
A0-J2 126.6010 126.5340 94.6000 94.6000
A0-J3 132.3060 132.3160 49.6580 49.6870
G1-J2 58.2270 58.2260 58.3000 58.3000
G1-J3 128.7290 128.7440 10.8190 10.8790
J2-J3 99.1070 99.0860 345.1770 345.2470
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 59527.239701197
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.227321
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 86.85
HIERARCH ESO ISS PBL12 END 86.791
HIERARCH ESO ISS PBLA12 START 118.0
HIERARCH ESO ISS PBLA12 END 118.1
HIERARCH ESO ISS PBL13 START 126.601
HIERARCH ESO ISS PBL13 END 126.534
HIERARCH ESO ISS PBLA13 START 94.6
HIERARCH ESO ISS PBLA13 END 94.6
HIERARCH ESO ISS PBL14 START 132.306
HIERARCH ESO ISS PBL14 END 132.316
HIERARCH ESO ISS PBLA14 START 49.658
HIERARCH ESO ISS PBLA14 END 49.687
HIERARCH ESO ISS PBL23 START 58.227
HIERARCH ESO ISS PBL23 END 58.226
HIERARCH ESO ISS PBLA23 START 58.3
HIERARCH ESO ISS PBLA23 END 58.3
HIERARCH ESO ISS PBL24 START 128.729
HIERARCH ESO ISS PBL24 END 128.744
HIERARCH ESO ISS PBLA24 START 10.819
HIERARCH ESO ISS PBLA24 END 10.879
HIERARCH ESO ISS PBL34 START 99.107
HIERARCH ESO ISS PBL34 END 99.086
HIERARCH ESO ISS PBLA34 START 345.177
HIERARCH ESO ISS PBLA34 END 345.247
HIERARCH ESO ISS AMBI TAU0 START 0.003726
HIERARCH ESO ISS AMBI TAU0 END 0.003533
HIERARCH ESO ISS AMBI TEMP 12.21
HIERARCH ESO ISS AMBI FWHM START 0.71
HIERARCH ESO ISS AMBI FWHM END 0.76