Exposure
ID
PIONI.2021-10-30T02:48:50.524_1
Header ID
PIONI.2021-10-30T02:48:50.524
Date updated
2021-10-30 02:56:52 UTC+0000
Release date
2022-10-30 02:56:52 UTC+0000
UTC Start
2021-10-30 02:48:50.524
UTC End
2021-10-30 02:49:16.124
MJD Start
59517.1172514386
MJD End
59517.1175477349
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.005257
Ambient temperature (°C)
13.96
Seeing (arcsec)
0.78
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 24.2260 24.2390 135.6000 135.6000
A0-D0 23.2830 23.3300 55.4000 55.5000
A0-C1 19.0710 19.1000 111.9760 111.9650
B2-D0 30.6010 30.6040 4.1000 4.2000
B2-C1 10.1960 10.1970 4.1060 4.2020
D0-C1 20.4050 20.4070 184.1620 184.2580
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 59517.1172514386
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 24.226
HIERARCH ESO ISS PBL12 END 24.239
HIERARCH ESO ISS PBLA12 START 135.6
HIERARCH ESO ISS PBLA12 END 135.6
HIERARCH ESO ISS PBL13 START 23.283
HIERARCH ESO ISS PBL13 END 23.33
HIERARCH ESO ISS PBLA13 START 55.4
HIERARCH ESO ISS PBLA13 END 55.5
HIERARCH ESO ISS PBL14 START 19.071
HIERARCH ESO ISS PBL14 END 19.1
HIERARCH ESO ISS PBLA14 START 111.976
HIERARCH ESO ISS PBLA14 END 111.965
HIERARCH ESO ISS PBL23 START 30.601
HIERARCH ESO ISS PBL23 END 30.604
HIERARCH ESO ISS PBLA23 START 4.1
HIERARCH ESO ISS PBLA23 END 4.2
HIERARCH ESO ISS PBL24 START 10.196
HIERARCH ESO ISS PBL24 END 10.197
HIERARCH ESO ISS PBLA24 START 4.106
HIERARCH ESO ISS PBLA24 END 4.202
HIERARCH ESO ISS PBL34 START 20.405
HIERARCH ESO ISS PBL34 END 20.407
HIERARCH ESO ISS PBLA34 START 184.162
HIERARCH ESO ISS PBLA34 END 184.258
HIERARCH ESO ISS AMBI TAU0 START 0.005257
HIERARCH ESO ISS AMBI TAU0 END 0.005257
HIERARCH ESO ISS AMBI TEMP 13.96
HIERARCH ESO ISS AMBI FWHM START 0.78
HIERARCH ESO ISS AMBI FWHM END 0.78