Exposure
ID
PIONI.2021-11-11T05:10:25.005_1
Header ID
PIONI.2021-11-11T05:10:25.005
Date updated
2021-11-11 05:15:59 UTC+0000
Release date
2022-11-11 05:15:58 UTC+0000
UTC Start
2021-11-11 05:10:25.005
UTC End
2021-11-11 05:10:50.605
MJD Start
59529.2155671897
MJD End
59529.215863486
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0030845
Ambient temperature (°C)
11.2
Seeing (arcsec)
0.925
Observation
ID
48840
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
36577
Name
eps Eri
RA
53.22732
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 89.0140 88.9760 116.2000 116.2000
A0-J2 128.7530 128.7230 93.4000 93.5000
A0-J3 131.3170 131.3500 48.1780 48.2150
G1-J2 57.9950 58.0060 57.0000 57.0000
G1-J3 128.1150 128.1280 8.0660 8.1290
J2-J3 100.0820 100.0600 342.1570 342.2220
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 59529.2155671897
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.22732
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 89.014
HIERARCH ESO ISS PBL12 END 88.976
HIERARCH ESO ISS PBLA12 START 116.2
HIERARCH ESO ISS PBLA12 END 116.2
HIERARCH ESO ISS PBL13 START 128.753
HIERARCH ESO ISS PBL13 END 128.723
HIERARCH ESO ISS PBLA13 START 93.4
HIERARCH ESO ISS PBLA13 END 93.5
HIERARCH ESO ISS PBL14 START 131.317
HIERARCH ESO ISS PBL14 END 131.35
HIERARCH ESO ISS PBLA14 START 48.178
HIERARCH ESO ISS PBLA14 END 48.215
HIERARCH ESO ISS PBL23 START 57.995
HIERARCH ESO ISS PBL23 END 58.006
HIERARCH ESO ISS PBLA23 START 57.0
HIERARCH ESO ISS PBLA23 END 57.0
HIERARCH ESO ISS PBL24 START 128.115
HIERARCH ESO ISS PBL24 END 128.128
HIERARCH ESO ISS PBLA24 START 8.066
HIERARCH ESO ISS PBLA24 END 8.129
HIERARCH ESO ISS PBL34 START 100.082
HIERARCH ESO ISS PBL34 END 100.06
HIERARCH ESO ISS PBLA34 START 342.157
HIERARCH ESO ISS PBLA34 END 342.222
HIERARCH ESO ISS AMBI TAU0 START 0.002851
HIERARCH ESO ISS AMBI TAU0 END 0.003318
HIERARCH ESO ISS AMBI TEMP 11.2
HIERARCH ESO ISS AMBI FWHM START 0.98
HIERARCH ESO ISS AMBI FWHM END 0.87