Exposure
ID
PIONI.2021-10-30T02:47:34.284_1
Header ID
PIONI.2021-10-30T02:47:34.284
Date updated
2021-10-30 02:51:19 UTC+0000
Release date
2022-10-30 02:51:19 UTC+0000
UTC Start
2021-10-30 02:47:34.284
UTC End
2021-10-30 02:47:59.884
MJD Start
59517.1163690328
MJD End
59517.1166653291
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0052605
Ambient temperature (°C)
14.01
Seeing (arcsec)
0.79
Observation
ID
48669
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
36449
Name
eps Eri
RA
53.226765
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 24.1970 24.2110 135.6000 135.6000
A0-D0 23.1830 23.2300 55.2000 55.3000
A0-C1 19.0080 19.0370 111.9990 111.9880
B2-D0 30.5950 30.5980 3.9000 4.0000
B2-C1 10.1940 10.1950 3.9020 3.9980
D0-C1 20.4010 20.4030 183.9580 184.0540
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 59517.1163690328
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.226765
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 24.197
HIERARCH ESO ISS PBL12 END 24.211
HIERARCH ESO ISS PBLA12 START 135.6
HIERARCH ESO ISS PBLA12 END 135.6
HIERARCH ESO ISS PBL13 START 23.183
HIERARCH ESO ISS PBL13 END 23.23
HIERARCH ESO ISS PBLA13 START 55.2
HIERARCH ESO ISS PBLA13 END 55.3
HIERARCH ESO ISS PBL14 START 19.008
HIERARCH ESO ISS PBL14 END 19.037
HIERARCH ESO ISS PBLA14 START 111.999
HIERARCH ESO ISS PBLA14 END 111.988
HIERARCH ESO ISS PBL23 START 30.595
HIERARCH ESO ISS PBL23 END 30.598
HIERARCH ESO ISS PBLA23 START 3.9
HIERARCH ESO ISS PBLA23 END 4.0
HIERARCH ESO ISS PBL24 START 10.194
HIERARCH ESO ISS PBL24 END 10.195
HIERARCH ESO ISS PBLA24 START 3.902
HIERARCH ESO ISS PBLA24 END 3.998
HIERARCH ESO ISS PBL34 START 20.401
HIERARCH ESO ISS PBL34 END 20.403
HIERARCH ESO ISS PBLA34 START 183.958
HIERARCH ESO ISS PBLA34 END 184.054
HIERARCH ESO ISS AMBI TAU0 START 0.005264
HIERARCH ESO ISS AMBI TAU0 END 0.005257
HIERARCH ESO ISS AMBI TEMP 14.01
HIERARCH ESO ISS AMBI FWHM START 0.8
HIERARCH ESO ISS AMBI FWHM END 0.78