Exposure
ID
PIONI.2021-11-05T08:03:07.422_1
Header ID
PIONI.2021-11-05T08:03:07.422
Date updated
2021-11-05 08:10:35 UTC+0000
Release date
2022-11-05 08:10:35 UTC+0000
UTC Start
2021-11-05 08:03:07.422
UTC End
2021-11-05 08:03:33.022
MJD Start
59523.3355025654
MJD End
59523.3357988617
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0036885
Ambient temperature (°C)
10.12
Seeing (arcsec)
0.88
Observation
ID
48754
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
36515
Name
eps Eri
RA
53.227323
DEC
-9.45816
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
K0 B2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-B2 106.9270 106.7880 243.9000 243.9000
K0-D0 78.9690 78.8320 255.5000 255.5000
K0-J3 50.7930 50.7860 354.0060 354.1030
B2-D0 33.5760 33.5690 35.7000 35.7000
B2-J3 133.2120 133.1510 42.9330 42.9300
D0-J3 99.9970 99.9420 45.3720 45.3650
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 59523.3355025654
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.227323
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 B2
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 106.927
HIERARCH ESO ISS PBL12 END 106.788
HIERARCH ESO ISS PBLA12 START 243.9
HIERARCH ESO ISS PBLA12 END 243.9
HIERARCH ESO ISS PBL13 START 78.969
HIERARCH ESO ISS PBL13 END 78.832
HIERARCH ESO ISS PBLA13 START 255.5
HIERARCH ESO ISS PBLA13 END 255.5
HIERARCH ESO ISS PBL14 START 50.793
HIERARCH ESO ISS PBL14 END 50.786
HIERARCH ESO ISS PBLA14 START 354.006
HIERARCH ESO ISS PBLA14 END 354.103
HIERARCH ESO ISS PBL23 START 33.576
HIERARCH ESO ISS PBL23 END 33.569
HIERARCH ESO ISS PBLA23 START 35.7
HIERARCH ESO ISS PBLA23 END 35.7
HIERARCH ESO ISS PBL24 START 133.212
HIERARCH ESO ISS PBL24 END 133.151
HIERARCH ESO ISS PBLA24 START 42.933
HIERARCH ESO ISS PBLA24 END 42.93
HIERARCH ESO ISS PBL34 START 99.997
HIERARCH ESO ISS PBL34 END 99.942
HIERARCH ESO ISS PBLA34 START 45.372
HIERARCH ESO ISS PBLA34 END 45.365
HIERARCH ESO ISS AMBI TAU0 START 0.00374
HIERARCH ESO ISS AMBI TAU0 END 0.003637
HIERARCH ESO ISS AMBI TEMP 10.12
HIERARCH ESO ISS AMBI FWHM START 0.91
HIERARCH ESO ISS AMBI FWHM END 0.85