Exposure
ID
PIONI.2021-10-29T05:07:47.772_1
Header ID
PIONI.2021-10-29T05:07:47.772
Date updated
2021-10-29 05:17:08 UTC+0000
Release date
2022-10-29 05:17:07 UTC+0000
UTC Start
2021-10-29 05:07:47.772
UTC End
2021-10-29 05:08:13.372
MJD Start
59516.2137473589
MJD End
59516.2140436552
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.003801
Ambient temperature (°C)
12.8
Seeing (arcsec)
0.67
Observation
ID
48675
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
36455
Name
eps Eri
RA
53.226766
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 25.1490 25.1440 138.9000 139.0000
A0-D0 31.1250 31.1430 69.7000 69.7000
A0-C1 22.6150 22.6160 113.5620 113.5850
B2-D0 32.3640 32.3740 23.0000 23.1000
B2-C1 10.7810 10.7840 22.9940 23.0620
D0-C1 21.5830 21.5900 203.0600 203.1270
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 59516.2137473589
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.226766
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 25.149
HIERARCH ESO ISS PBL12 END 25.144
HIERARCH ESO ISS PBLA12 START 138.9
HIERARCH ESO ISS PBLA12 END 139.0
HIERARCH ESO ISS PBL13 START 31.125
HIERARCH ESO ISS PBL13 END 31.143
HIERARCH ESO ISS PBLA13 START 69.7
HIERARCH ESO ISS PBLA13 END 69.7
HIERARCH ESO ISS PBL14 START 22.615
HIERARCH ESO ISS PBL14 END 22.616
HIERARCH ESO ISS PBLA14 START 113.562
HIERARCH ESO ISS PBLA14 END 113.585
HIERARCH ESO ISS PBL23 START 32.364
HIERARCH ESO ISS PBL23 END 32.374
HIERARCH ESO ISS PBLA23 START 23.0
HIERARCH ESO ISS PBLA23 END 23.1
HIERARCH ESO ISS PBL24 START 10.781
HIERARCH ESO ISS PBL24 END 10.784
HIERARCH ESO ISS PBLA24 START 22.994
HIERARCH ESO ISS PBLA24 END 23.062
HIERARCH ESO ISS PBL34 START 21.583
HIERARCH ESO ISS PBL34 END 21.59
HIERARCH ESO ISS PBLA34 START 203.06
HIERARCH ESO ISS PBLA34 END 203.127
HIERARCH ESO ISS AMBI TAU0 START 0.003801
HIERARCH ESO ISS AMBI TAU0 END 0.003801
HIERARCH ESO ISS AMBI TEMP 12.8
HIERARCH ESO ISS AMBI FWHM START 0.67
HIERARCH ESO ISS AMBI FWHM END 0.67