Exposure
ID
PIONI.2021-10-29T02:43:13.558_1
Header ID
PIONI.2021-10-29T02:43:13.558
Date updated
2021-10-29 02:51:24 UTC+0000
Release date
2022-10-29 02:51:24 UTC+0000
UTC Start
2021-10-29 02:43:13.558
UTC End
2021-10-29 02:43:39.158
MJD Start
59516.113351366
MJD End
59516.1136476623
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0032455
Ambient temperature (°C)
13.37
Seeing (arcsec)
0.83
Observation
ID
48669
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
36449
Name
eps Eri
RA
53.226765
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 24.0060 24.0200 135.7000 135.7000
A0-D0 22.5330 22.5790 53.7000 53.8000
A0-C1 18.5920 18.6220 112.1760 112.1620
B2-D0 30.5650 30.5670 2.6000 2.7000
B2-C1 10.1840 10.1850 2.5830 2.6770
D0-C1 20.3810 20.3820 182.6370 182.7310
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 59516.113351366
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.226765
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 24.006
HIERARCH ESO ISS PBL12 END 24.02
HIERARCH ESO ISS PBLA12 START 135.7
HIERARCH ESO ISS PBLA12 END 135.7
HIERARCH ESO ISS PBL13 START 22.533
HIERARCH ESO ISS PBL13 END 22.579
HIERARCH ESO ISS PBLA13 START 53.7
HIERARCH ESO ISS PBLA13 END 53.8
HIERARCH ESO ISS PBL14 START 18.592
HIERARCH ESO ISS PBL14 END 18.622
HIERARCH ESO ISS PBLA14 START 112.176
HIERARCH ESO ISS PBLA14 END 112.162
HIERARCH ESO ISS PBL23 START 30.565
HIERARCH ESO ISS PBL23 END 30.567
HIERARCH ESO ISS PBLA23 START 2.6
HIERARCH ESO ISS PBLA23 END 2.7
HIERARCH ESO ISS PBL24 START 10.184
HIERARCH ESO ISS PBL24 END 10.185
HIERARCH ESO ISS PBLA24 START 2.583
HIERARCH ESO ISS PBLA24 END 2.677
HIERARCH ESO ISS PBL34 START 20.381
HIERARCH ESO ISS PBL34 END 20.382
HIERARCH ESO ISS PBLA34 START 182.637
HIERARCH ESO ISS PBLA34 END 182.731
HIERARCH ESO ISS AMBI TAU0 START 0.003087
HIERARCH ESO ISS AMBI TAU0 END 0.003404
HIERARCH ESO ISS AMBI TEMP 13.37
HIERARCH ESO ISS AMBI FWHM START 0.85
HIERARCH ESO ISS AMBI FWHM END 0.81