Exposure
ID
PIONI.2021-11-02T04:23:04.480_1
Header ID
PIONI.2021-11-02T04:23:04.480
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 04:23:04.480
UTC End
2021-11-02 04:23:30.080
MJD Start
59520.1826907364
MJD End
59520.1829870327
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0036265
Ambient temperature (°C)
11.41
Seeing (arcsec)
0.835
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 25.2910 25.2900 137.4000 137.4000
A0-D0 30.0480 30.0740 67.7000 67.7000
A0-C1 22.3910 22.3990 112.6220 112.6380
B2-D0 31.8660 31.8760 19.6000 19.7000
B2-C1 10.6160 10.6190 19.5340 19.6070
D0-C1 21.2510 21.2570 199.6000 199.6740
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 59520.1826907364
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 25.291
HIERARCH ESO ISS PBL12 END 25.29
HIERARCH ESO ISS PBLA12 START 137.4
HIERARCH ESO ISS PBLA12 END 137.4
HIERARCH ESO ISS PBL13 START 30.048
HIERARCH ESO ISS PBL13 END 30.074
HIERARCH ESO ISS PBLA13 START 67.7
HIERARCH ESO ISS PBLA13 END 67.7
HIERARCH ESO ISS PBL14 START 22.391
HIERARCH ESO ISS PBL14 END 22.399
HIERARCH ESO ISS PBLA14 START 112.622
HIERARCH ESO ISS PBLA14 END 112.638
HIERARCH ESO ISS PBL23 START 31.866
HIERARCH ESO ISS PBL23 END 31.876
HIERARCH ESO ISS PBLA23 START 19.6
HIERARCH ESO ISS PBLA23 END 19.7
HIERARCH ESO ISS PBL24 START 10.616
HIERARCH ESO ISS PBL24 END 10.619
HIERARCH ESO ISS PBLA24 START 19.534
HIERARCH ESO ISS PBLA24 END 19.607
HIERARCH ESO ISS PBL34 START 21.251
HIERARCH ESO ISS PBL34 END 21.257
HIERARCH ESO ISS PBLA34 START 199.6
HIERARCH ESO ISS PBLA34 END 199.674
HIERARCH ESO ISS AMBI TAU0 START 0.003499
HIERARCH ESO ISS AMBI TAU0 END 0.003754
HIERARCH ESO ISS AMBI TEMP 11.41
HIERARCH ESO ISS AMBI FWHM START 0.9
HIERARCH ESO ISS AMBI FWHM END 0.77