Exposure
ID
PIONI.2021-11-06T04:53:09.499_1
Header ID
PIONI.2021-11-06T04:53:09.499
Date updated
2021-11-06 05:00:45 UTC+0000
Release date
2022-11-06 05:00:45 UTC+0000
UTC Start
2021-11-06 04:53:09.498
UTC End
2021-11-06 04:53:35.098
MJD Start
59524.2035821578
MJD End
59524.2038784541
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.003755
Ambient temperature (°C)
10.96
Seeing (arcsec)
0.685
Observation
ID
48772
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
36529
Name
eps Eri
RA
53.227885
DEC
-9.45816
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
K0 G2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-G2 68.1380 68.1510 270.7000 270.7000
K0-D0 94.6480 94.6870 250.6000 250.7000
K0-J3 55.4920 55.4780 330.3180 330.3680
G2-D0 38.5660 38.5810 213.3000 213.3000
G2-J3 62.4120 62.4400 40.6450 40.6990
D0-J3 100.7810 100.8230 37.8320 37.8880
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 59524.2035821578
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.227885
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 K0
HIERARCH ESO ISS CONF STATION2 G2
HIERARCH ESO ISS CONF STATION3 D0
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 68.138
HIERARCH ESO ISS PBL12 END 68.151
HIERARCH ESO ISS PBLA12 START 270.7
HIERARCH ESO ISS PBLA12 END 270.7
HIERARCH ESO ISS PBL13 START 94.648
HIERARCH ESO ISS PBL13 END 94.687
HIERARCH ESO ISS PBLA13 START 250.6
HIERARCH ESO ISS PBLA13 END 250.7
HIERARCH ESO ISS PBL14 START 55.492
HIERARCH ESO ISS PBL14 END 55.478
HIERARCH ESO ISS PBLA14 START 330.318
HIERARCH ESO ISS PBLA14 END 330.368
HIERARCH ESO ISS PBL23 START 38.566
HIERARCH ESO ISS PBL23 END 38.581
HIERARCH ESO ISS PBLA23 START 213.3
HIERARCH ESO ISS PBLA23 END 213.3
HIERARCH ESO ISS PBL24 START 62.412
HIERARCH ESO ISS PBL24 END 62.44
HIERARCH ESO ISS PBLA24 START 40.645
HIERARCH ESO ISS PBLA24 END 40.699
HIERARCH ESO ISS PBL34 START 100.781
HIERARCH ESO ISS PBL34 END 100.823
HIERARCH ESO ISS PBLA34 START 37.832
HIERARCH ESO ISS PBLA34 END 37.888
HIERARCH ESO ISS AMBI TAU0 START 0.003883
HIERARCH ESO ISS AMBI TAU0 END 0.003627
HIERARCH ESO ISS AMBI TEMP 10.96
HIERARCH ESO ISS AMBI FWHM START 0.63
HIERARCH ESO ISS AMBI FWHM END 0.74