Exposure
ID
PIONI.2021-11-02T05:31:37.630_1
Header ID
PIONI.2021-11-02T05:31:37.630
Date updated
2021-11-02 05:41:31 UTC+0000
Release date
2022-11-02 05:41:30 UTC+0000
UTC Start
2021-11-02 05:31:37.629
UTC End
2021-11-02 05:32:03.229
MJD Start
59520.230296636
MJD End
59520.2305929323
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.003068
Ambient temperature (°C)
11.35
Seeing (arcsec)
0.77
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 24.6990 24.6910 141.8000 141.9000
A0-D0 31.9170 31.9230 71.8000 71.8000
A0-C1 22.4420 22.4350 115.3850 115.4180
B2-D0 33.0180 33.0280 27.1000 27.2000
B2-C1 10.9990 11.0020 27.0700 27.1250
D0-C1 22.0200 22.0260 207.1340 207.1890
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 59520.230296636
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 24.699
HIERARCH ESO ISS PBL12 END 24.691
HIERARCH ESO ISS PBLA12 START 141.8
HIERARCH ESO ISS PBLA12 END 141.9
HIERARCH ESO ISS PBL13 START 31.917
HIERARCH ESO ISS PBL13 END 31.923
HIERARCH ESO ISS PBLA13 START 71.8
HIERARCH ESO ISS PBLA13 END 71.8
HIERARCH ESO ISS PBL14 START 22.442
HIERARCH ESO ISS PBL14 END 22.435
HIERARCH ESO ISS PBLA14 START 115.385
HIERARCH ESO ISS PBLA14 END 115.418
HIERARCH ESO ISS PBL23 START 33.018
HIERARCH ESO ISS PBL23 END 33.028
HIERARCH ESO ISS PBLA23 START 27.1
HIERARCH ESO ISS PBLA23 END 27.2
HIERARCH ESO ISS PBL24 START 10.999
HIERARCH ESO ISS PBL24 END 11.002
HIERARCH ESO ISS PBLA24 START 27.07
HIERARCH ESO ISS PBLA24 END 27.125
HIERARCH ESO ISS PBL34 START 22.02
HIERARCH ESO ISS PBL34 END 22.026
HIERARCH ESO ISS PBLA34 START 207.134
HIERARCH ESO ISS PBLA34 END 207.189
HIERARCH ESO ISS AMBI TAU0 START 0.003068
HIERARCH ESO ISS AMBI TAU0 END 0.003068
HIERARCH ESO ISS AMBI TEMP 11.35
HIERARCH ESO ISS AMBI FWHM START 0.77
HIERARCH ESO ISS AMBI FWHM END 0.77