Exposure
ID
PIONI.2021-10-29T03:44:42.109_1
Header ID
PIONI.2021-10-29T03:44:42.109
Date updated
2021-10-29 03:51:28 UTC+0000
Release date
2022-10-29 03:51:27 UTC+0000
UTC Start
2021-10-29 03:44:42.110
UTC End
2021-10-29 03:45:07.710
MJD Start
59516.1560429344
MJD End
59516.1563392307
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0056735
Ambient temperature (°C)
13.5
Seeing (arcsec)
0.51
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 25.0680 25.0740 135.7000 135.7000
A0-D0 27.0540 27.0940 62.7000 62.8000
A0-C1 21.1740 21.1930 111.7050 111.7090
B2-D0 31.0530 31.0600 12.1000 12.2000
B2-C1 10.3450 10.3480 12.1020 12.1900
D0-C1 20.7080 20.7130 192.1650 192.2540
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 59516.1560429344
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 25.068
HIERARCH ESO ISS PBL12 END 25.074
HIERARCH ESO ISS PBLA12 START 135.7
HIERARCH ESO ISS PBLA12 END 135.7
HIERARCH ESO ISS PBL13 START 27.054
HIERARCH ESO ISS PBL13 END 27.094
HIERARCH ESO ISS PBLA13 START 62.7
HIERARCH ESO ISS PBLA13 END 62.8
HIERARCH ESO ISS PBL14 START 21.174
HIERARCH ESO ISS PBL14 END 21.193
HIERARCH ESO ISS PBLA14 START 111.705
HIERARCH ESO ISS PBLA14 END 111.709
HIERARCH ESO ISS PBL23 START 31.053
HIERARCH ESO ISS PBL23 END 31.06
HIERARCH ESO ISS PBLA23 START 12.1
HIERARCH ESO ISS PBLA23 END 12.2
HIERARCH ESO ISS PBL24 START 10.345
HIERARCH ESO ISS PBL24 END 10.348
HIERARCH ESO ISS PBLA24 START 12.102
HIERARCH ESO ISS PBLA24 END 12.19
HIERARCH ESO ISS PBL34 START 20.708
HIERARCH ESO ISS PBL34 END 20.713
HIERARCH ESO ISS PBLA34 START 192.165
HIERARCH ESO ISS PBLA34 END 192.254
HIERARCH ESO ISS AMBI TAU0 START 0.005618
HIERARCH ESO ISS AMBI TAU0 END 0.005729
HIERARCH ESO ISS AMBI TEMP 13.5
HIERARCH ESO ISS AMBI FWHM START 0.51
HIERARCH ESO ISS AMBI FWHM END 0.51