Exposure
ID
PIONI.2021-11-08T06:09:23.920_1
Header ID
PIONI.2021-11-08T06:09:23.920
Date updated
2021-11-08 06:16:44 UTC+0000
Release date
2022-11-08 06:16:44 UTC+0000
UTC Start
2021-11-08 06:09:23.920
UTC End
2021-11-08 06:09:49.520
MJD Start
59526.2565268469
MJD End
59526.2568231432
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.004837
Ambient temperature (°C)
12.71
Seeing (arcsec)
0.68
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 84.6400 84.5670 119.7000 119.7000
A0-J2 123.8560 123.7600 95.5000 95.6000
A0-J3 132.3770 132.3700 50.5160 50.5380
G1-J2 58.0270 58.0170 59.0000 59.0000
G1-J3 129.2650 129.2810 12.7880 12.8450
J2-J3 98.4370 98.4180 347.6150 347.6890
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 59526.2565268469
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 84.64
HIERARCH ESO ISS PBL12 END 84.567
HIERARCH ESO ISS PBLA12 START 119.7
HIERARCH ESO ISS PBLA12 END 119.7
HIERARCH ESO ISS PBL13 START 123.856
HIERARCH ESO ISS PBL13 END 123.76
HIERARCH ESO ISS PBLA13 START 95.5
HIERARCH ESO ISS PBLA13 END 95.6
HIERARCH ESO ISS PBL14 START 132.377
HIERARCH ESO ISS PBL14 END 132.37
HIERARCH ESO ISS PBLA14 START 50.516
HIERARCH ESO ISS PBLA14 END 50.538
HIERARCH ESO ISS PBL23 START 58.027
HIERARCH ESO ISS PBL23 END 58.017
HIERARCH ESO ISS PBLA23 START 59.0
HIERARCH ESO ISS PBLA23 END 59.0
HIERARCH ESO ISS PBL24 START 129.265
HIERARCH ESO ISS PBL24 END 129.281
HIERARCH ESO ISS PBLA24 START 12.788
HIERARCH ESO ISS PBLA24 END 12.845
HIERARCH ESO ISS PBL34 START 98.437
HIERARCH ESO ISS PBL34 END 98.418
HIERARCH ESO ISS PBLA34 START 347.615
HIERARCH ESO ISS PBLA34 END 347.689
HIERARCH ESO ISS AMBI TAU0 START 0.004837
HIERARCH ESO ISS AMBI TAU0 END 0.004837
HIERARCH ESO ISS AMBI TEMP 12.71
HIERARCH ESO ISS AMBI FWHM START 0.71
HIERARCH ESO ISS AMBI FWHM END 0.65