Exposure
ID
PIONI.2021-11-02T04:42:04.321_1
Header ID
PIONI.2021-11-02T04:42:04.321
Date updated
2021-11-02 04:51:33 UTC+0000
Release date
2022-11-02 04:51:33 UTC+0000
UTC Start
2021-11-02 04:42:04.321
UTC End
2021-11-02 04:42:29.921
MJD Start
59520.1958833425
MJD End
59520.1961796388
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0028125
Ambient temperature (°C)
11.36
Seeing (arcsec)
1.045
Observation
ID
48710
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
36481
Name
eps Eri
RA
53.226764
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 25.2170 25.2130 138.4000 138.4000
A0-D0 30.8000 30.8200 69.0000 69.1000
A0-C1 22.5720 22.5750 113.2040 113.2240
B2-D0 32.1920 32.2020 21.9000 22.0000
B2-C1 10.7240 10.7270 21.8480 21.9170
D0-C1 21.4680 21.4750 201.9150 201.9830
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 59520.1958833425
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.226764
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 25.217
HIERARCH ESO ISS PBL12 END 25.213
HIERARCH ESO ISS PBLA12 START 138.4
HIERARCH ESO ISS PBLA12 END 138.4
HIERARCH ESO ISS PBL13 START 30.8
HIERARCH ESO ISS PBL13 END 30.82
HIERARCH ESO ISS PBLA13 START 69.0
HIERARCH ESO ISS PBLA13 END 69.1
HIERARCH ESO ISS PBL14 START 22.572
HIERARCH ESO ISS PBL14 END 22.575
HIERARCH ESO ISS PBLA14 START 113.204
HIERARCH ESO ISS PBLA14 END 113.224
HIERARCH ESO ISS PBL23 START 32.192
HIERARCH ESO ISS PBL23 END 32.202
HIERARCH ESO ISS PBLA23 START 21.9
HIERARCH ESO ISS PBLA23 END 22.0
HIERARCH ESO ISS PBL24 START 10.724
HIERARCH ESO ISS PBL24 END 10.727
HIERARCH ESO ISS PBLA24 START 21.848
HIERARCH ESO ISS PBLA24 END 21.917
HIERARCH ESO ISS PBL34 START 21.468
HIERARCH ESO ISS PBL34 END 21.475
HIERARCH ESO ISS PBLA34 START 201.915
HIERARCH ESO ISS PBLA34 END 201.983
HIERARCH ESO ISS AMBI TAU0 START 0.00277
HIERARCH ESO ISS AMBI TAU0 END 0.002855
HIERARCH ESO ISS AMBI TEMP 11.36
HIERARCH ESO ISS AMBI FWHM START 1.06
HIERARCH ESO ISS AMBI FWHM END 1.03