Exposure
ID
PIONI.2021-11-13T07:21:29.922_1
Header ID
PIONI.2021-11-13T07:21:29.922
Date updated
2021-11-13 07:31:27 UTC+0000
Release date
2022-11-13 07:31:27 UTC+0000
UTC Start
2021-11-13 07:21:29.922
UTC End
2021-11-13 07:21:55.522
MJD Start
59531.306596315
MJD End
59531.3068926113
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.006278
Ambient temperature (°C)
13.19
Seeing (arcsec)
0.43
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 69.9820 69.8730 131.2000 131.3000
A0-J2 100.3720 100.1700 101.1000 101.1000
A0-J3 125.0450 124.9590 51.6820 51.6750
G1-J2 53.0470 52.9950 59.7000 59.7000
G1-J3 131.6840 131.6960 20.1760 20.2140
J2-J3 96.8600 96.8590 359.7650 359.8450
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 59531.306596315
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 69.982
HIERARCH ESO ISS PBL12 END 69.873
HIERARCH ESO ISS PBLA12 START 131.2
HIERARCH ESO ISS PBLA12 END 131.3
HIERARCH ESO ISS PBL13 START 100.372
HIERARCH ESO ISS PBL13 END 100.17
HIERARCH ESO ISS PBLA13 START 101.1
HIERARCH ESO ISS PBLA13 END 101.1
HIERARCH ESO ISS PBL14 START 125.045
HIERARCH ESO ISS PBL14 END 124.959
HIERARCH ESO ISS PBLA14 START 51.682
HIERARCH ESO ISS PBLA14 END 51.675
HIERARCH ESO ISS PBL23 START 53.047
HIERARCH ESO ISS PBL23 END 52.995
HIERARCH ESO ISS PBLA23 START 59.7
HIERARCH ESO ISS PBLA23 END 59.7
HIERARCH ESO ISS PBL24 START 131.684
HIERARCH ESO ISS PBL24 END 131.696
HIERARCH ESO ISS PBLA24 START 20.176
HIERARCH ESO ISS PBLA24 END 20.214
HIERARCH ESO ISS PBL34 START 96.86
HIERARCH ESO ISS PBL34 END 96.859
HIERARCH ESO ISS PBLA34 START 359.765
HIERARCH ESO ISS PBLA34 END 359.845
HIERARCH ESO ISS AMBI TAU0 START 0.006278
HIERARCH ESO ISS AMBI TAU0 END 0.006278
HIERARCH ESO ISS AMBI TEMP 13.19
HIERARCH ESO ISS AMBI FWHM START 0.43
HIERARCH ESO ISS AMBI FWHM END 0.43