Exposure
ID
PIONI.2021-11-02T04:22:26.454_1
Header ID
PIONI.2021-11-02T04:22:26.454
Date updated
2021-11-02 04:31:46 UTC+0000
Release date
2022-11-02 04:31:46 UTC+0000
UTC Start
2021-11-02 04:22:26.454
UTC End
2021-11-02 04:22:52.054
MJD Start
59520.1822506264
MJD End
59520.1825469227
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.003481
Ambient temperature (°C)
11.39
Seeing (arcsec)
0.995
Observation
ID
48709
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
36480
Name
eps Eri
RA
53.226763
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 25.2920 25.2910 137.4000 137.4000
A0-D0 30.0200 30.0460 67.6000 67.7000
A0-C1 22.3830 22.3910 112.6050 112.6210
B2-D0 31.8560 31.8660 19.5000 19.6000
B2-C1 10.6120 10.6150 19.4540 19.5280
D0-C1 21.2440 21.2500 199.5200 199.5940
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 59520.1822506264
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.226763
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 25.292
HIERARCH ESO ISS PBL12 END 25.291
HIERARCH ESO ISS PBLA12 START 137.4
HIERARCH ESO ISS PBLA12 END 137.4
HIERARCH ESO ISS PBL13 START 30.02
HIERARCH ESO ISS PBL13 END 30.046
HIERARCH ESO ISS PBLA13 START 67.6
HIERARCH ESO ISS PBLA13 END 67.7
HIERARCH ESO ISS PBL14 START 22.383
HIERARCH ESO ISS PBL14 END 22.391
HIERARCH ESO ISS PBLA14 START 112.605
HIERARCH ESO ISS PBLA14 END 112.621
HIERARCH ESO ISS PBL23 START 31.856
HIERARCH ESO ISS PBL23 END 31.866
HIERARCH ESO ISS PBLA23 START 19.5
HIERARCH ESO ISS PBLA23 END 19.6
HIERARCH ESO ISS PBL24 START 10.612
HIERARCH ESO ISS PBL24 END 10.615
HIERARCH ESO ISS PBLA24 START 19.454
HIERARCH ESO ISS PBLA24 END 19.528
HIERARCH ESO ISS PBL34 START 21.244
HIERARCH ESO ISS PBL34 END 21.25
HIERARCH ESO ISS PBLA34 START 199.52
HIERARCH ESO ISS PBLA34 END 199.594
HIERARCH ESO ISS AMBI TAU0 START 0.003463
HIERARCH ESO ISS AMBI TAU0 END 0.003499
HIERARCH ESO ISS AMBI TEMP 11.39
HIERARCH ESO ISS AMBI FWHM START 1.09
HIERARCH ESO ISS AMBI FWHM END 0.9