Exposure
ID
PIONI.2021-10-30T03:16:36.226_1
Header ID
PIONI.2021-10-30T03:16:36.226
Date updated
2021-10-30 03:21:48 UTC+0000
Release date
2022-10-30 03:21:48 UTC+0000
UTC Start
2021-10-30 03:16:36.226
UTC End
2021-10-30 03:17:01.826
MJD Start
59517.1365303909
MJD End
59517.1368266872
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.007699
Ambient temperature (°C)
14.65
Seeing (arcsec)
0.47
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 24.7520 24.7610 135.5000 135.5000
A0-D0 25.3810 25.4240 59.7000 59.8000
A0-C1 20.3040 20.3280 111.6740 111.6720
B2-D0 30.7920 30.7970 8.5000 8.6000
B2-C1 10.2590 10.2610 8.4570 8.5490
D0-C1 20.5330 20.5370 188.5170 188.6100
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 59517.1365303909
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 24.752
HIERARCH ESO ISS PBL12 END 24.761
HIERARCH ESO ISS PBLA12 START 135.5
HIERARCH ESO ISS PBLA12 END 135.5
HIERARCH ESO ISS PBL13 START 25.381
HIERARCH ESO ISS PBL13 END 25.424
HIERARCH ESO ISS PBLA13 START 59.7
HIERARCH ESO ISS PBLA13 END 59.8
HIERARCH ESO ISS PBL14 START 20.304
HIERARCH ESO ISS PBL14 END 20.328
HIERARCH ESO ISS PBLA14 START 111.674
HIERARCH ESO ISS PBLA14 END 111.672
HIERARCH ESO ISS PBL23 START 30.792
HIERARCH ESO ISS PBL23 END 30.797
HIERARCH ESO ISS PBLA23 START 8.5
HIERARCH ESO ISS PBLA23 END 8.6
HIERARCH ESO ISS PBL24 START 10.259
HIERARCH ESO ISS PBL24 END 10.261
HIERARCH ESO ISS PBLA24 START 8.457
HIERARCH ESO ISS PBLA24 END 8.549
HIERARCH ESO ISS PBL34 START 20.533
HIERARCH ESO ISS PBL34 END 20.537
HIERARCH ESO ISS PBLA34 START 188.517
HIERARCH ESO ISS PBLA34 END 188.61
HIERARCH ESO ISS AMBI TAU0 START 0.007495
HIERARCH ESO ISS AMBI TAU0 END 0.007903
HIERARCH ESO ISS AMBI TEMP 14.65
HIERARCH ESO ISS AMBI FWHM START 0.41
HIERARCH ESO ISS AMBI FWHM END 0.53