Exposure
ID
PIONI.2021-11-08T05:35:23.510_1
Header ID
PIONI.2021-11-08T05:35:23.510
Date updated
2021-11-08 05:40:48 UTC+0000
Release date
2022-11-08 05:40:48 UTC+0000
UTC Start
2021-11-08 05:35:23.510
UTC End
2021-11-08 05:35:49.110
MJD Start
59526.232911001
MJD End
59526.2332072973
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0061285
Ambient temperature (°C)
12.58
Seeing (arcsec)
0.585
Observation
ID
48812
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
36560
Name
eps Eri
RA
53.227322
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 88.0660 88.0180 117.0000 117.1000
A0-J2 127.9120 127.8640 94.0000 94.0000
A0-J3 131.9250 131.9470 48.9530 48.9860
G1-J2 58.1780 58.1830 57.7000 57.7000
G1-J3 128.4000 128.4140 9.4340 9.4950
J2-J3 99.5960 99.5740 343.6050 343.6730
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 59526.232911001
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.227322
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 88.066
HIERARCH ESO ISS PBL12 END 88.018
HIERARCH ESO ISS PBLA12 START 117.0
HIERARCH ESO ISS PBLA12 END 117.1
HIERARCH ESO ISS PBL13 START 127.912
HIERARCH ESO ISS PBL13 END 127.864
HIERARCH ESO ISS PBLA13 START 94.0
HIERARCH ESO ISS PBLA13 END 94.0
HIERARCH ESO ISS PBL14 START 131.925
HIERARCH ESO ISS PBL14 END 131.947
HIERARCH ESO ISS PBLA14 START 48.953
HIERARCH ESO ISS PBLA14 END 48.986
HIERARCH ESO ISS PBL23 START 58.178
HIERARCH ESO ISS PBL23 END 58.183
HIERARCH ESO ISS PBLA23 START 57.7
HIERARCH ESO ISS PBLA23 END 57.7
HIERARCH ESO ISS PBL24 START 128.4
HIERARCH ESO ISS PBL24 END 128.414
HIERARCH ESO ISS PBLA24 START 9.434
HIERARCH ESO ISS PBLA24 END 9.495
HIERARCH ESO ISS PBL34 START 99.596
HIERARCH ESO ISS PBL34 END 99.574
HIERARCH ESO ISS PBLA34 START 343.605
HIERARCH ESO ISS PBLA34 END 343.673
HIERARCH ESO ISS AMBI TAU0 START 0.006666
HIERARCH ESO ISS AMBI TAU0 END 0.005591
HIERARCH ESO ISS AMBI TEMP 12.58
HIERARCH ESO ISS AMBI FWHM START 0.51
HIERARCH ESO ISS AMBI FWHM END 0.66