Exposure
ID
PIONI.2021-10-29T06:02:43.001_1
Header ID
PIONI.2021-10-29T06:02:43.001
Date updated
2021-10-29 06:11:43 UTC+0000
Release date
2022-10-29 06:11:43 UTC+0000
UTC Start
2021-10-29 06:02:43.002
UTC End
2021-10-29 06:03:08.602
MJD Start
59516.2518865927
MJD End
59516.252182889
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0058005
Ambient temperature (°C)
12.29
Seeing (arcsec)
0.445
Observation
ID
48669
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
36449
Name
eps Eri
RA
53.226765
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 24.4580 24.4480 143.2000 143.2000
A0-D0 32.0020 32.0030 72.5000 72.5000
A0-C1 22.2310 22.2210 116.2780 116.3150
B2-D0 33.2450 33.2530 28.5000 28.5000
B2-C1 11.0740 11.0770 28.4440 28.4950
D0-C1 22.1710 22.1760 208.5070 208.5580
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 59516.2518865927
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.226765
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 24.458
HIERARCH ESO ISS PBL12 END 24.448
HIERARCH ESO ISS PBLA12 START 143.2
HIERARCH ESO ISS PBLA12 END 143.2
HIERARCH ESO ISS PBL13 START 32.002
HIERARCH ESO ISS PBL13 END 32.003
HIERARCH ESO ISS PBLA13 START 72.5
HIERARCH ESO ISS PBLA13 END 72.5
HIERARCH ESO ISS PBL14 START 22.231
HIERARCH ESO ISS PBL14 END 22.221
HIERARCH ESO ISS PBLA14 START 116.278
HIERARCH ESO ISS PBLA14 END 116.315
HIERARCH ESO ISS PBL23 START 33.245
HIERARCH ESO ISS PBL23 END 33.253
HIERARCH ESO ISS PBLA23 START 28.5
HIERARCH ESO ISS PBLA23 END 28.5
HIERARCH ESO ISS PBL24 START 11.074
HIERARCH ESO ISS PBL24 END 11.077
HIERARCH ESO ISS PBLA24 START 28.444
HIERARCH ESO ISS PBLA24 END 28.495
HIERARCH ESO ISS PBL34 START 22.171
HIERARCH ESO ISS PBL34 END 22.176
HIERARCH ESO ISS PBLA34 START 208.507
HIERARCH ESO ISS PBLA34 END 208.558
HIERARCH ESO ISS AMBI TAU0 START 0.005215
HIERARCH ESO ISS AMBI TAU0 END 0.006386
HIERARCH ESO ISS AMBI TEMP 12.29
HIERARCH ESO ISS AMBI FWHM START 0.49
HIERARCH ESO ISS AMBI FWHM END 0.4