Exposure
ID
PIONI.2021-11-13T07:37:41.102_1
Header ID
PIONI.2021-11-13T07:37:41.102
Date updated
2021-11-13 07:46:04 UTC+0000
Release date
2022-11-13 07:46:04 UTC+0000
UTC Start
2021-11-13 07:37:41.102
UTC End
2021-11-13 07:38:06.702
MJD Start
59531.3178368271
MJD End
59531.3181331234
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.004364
Ambient temperature (°C)
12.92
Seeing (arcsec)
0.59
Observation
ID
48855
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
36582
Name
eps Eri
RA
53.227319
DEC
-9.45816
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
A0 G1 J2 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 66.9430 66.8300 134.2000 134.3000
A0-J2 94.5760 94.3530 102.5000 102.5000
A0-J3 122.4760 122.3740 51.4000 51.3860
G1-J2 51.5060 51.4450 59.4000 59.4000
G1-J3 131.9850 131.9950 21.1840 21.2200
J2-J3 96.9000 96.9040 1.9880 2.0700
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 59531.3178368271
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.227319
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 G1
HIERARCH ESO ISS CONF STATION3 J2
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 66.943
HIERARCH ESO ISS PBL12 END 66.83
HIERARCH ESO ISS PBLA12 START 134.2
HIERARCH ESO ISS PBLA12 END 134.3
HIERARCH ESO ISS PBL13 START 94.576
HIERARCH ESO ISS PBL13 END 94.353
HIERARCH ESO ISS PBLA13 START 102.5
HIERARCH ESO ISS PBLA13 END 102.5
HIERARCH ESO ISS PBL14 START 122.476
HIERARCH ESO ISS PBL14 END 122.374
HIERARCH ESO ISS PBLA14 START 51.4
HIERARCH ESO ISS PBLA14 END 51.386
HIERARCH ESO ISS PBL23 START 51.506
HIERARCH ESO ISS PBL23 END 51.445
HIERARCH ESO ISS PBLA23 START 59.4
HIERARCH ESO ISS PBLA23 END 59.4
HIERARCH ESO ISS PBL24 START 131.985
HIERARCH ESO ISS PBL24 END 131.995
HIERARCH ESO ISS PBLA24 START 21.184
HIERARCH ESO ISS PBLA24 END 21.22
HIERARCH ESO ISS PBL34 START 96.9
HIERARCH ESO ISS PBL34 END 96.904
HIERARCH ESO ISS PBLA34 START 1.988
HIERARCH ESO ISS PBLA34 END 2.07
HIERARCH ESO ISS AMBI TAU0 START 0.004364
HIERARCH ESO ISS AMBI TAU0 END 0.004364
HIERARCH ESO ISS AMBI TEMP 12.92
HIERARCH ESO ISS AMBI FWHM START 0.59
HIERARCH ESO ISS AMBI FWHM END 0.59