Exposure
ID
PIONI.2021-10-29T03:25:32.686_1
Header ID
PIONI.2021-10-29T03:25:32.686
Date updated
2021-10-29 03:37:06 UTC+0000
Release date
2022-10-29 03:37:06 UTC+0000
UTC Start
2021-10-29 03:25:32.686
UTC End
2021-10-29 03:25:58.286
MJD Start
59516.142739424
MJD End
59516.1430357203
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0049405
Ambient temperature (°C)
13.26
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 24.8280 24.8370 135.5000 135.5000
A0-D0 25.7420 25.7840 60.4000 60.4000
A0-C1 20.5000 20.5230 111.6600 111.6590
B2-D0 30.8390 30.8450 9.3000 9.4000
B2-C1 10.2750 10.2770 9.2270 9.3180
D0-C1 20.5650 20.5690 189.2880 189.3800
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 59516.142739424
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 24.828
HIERARCH ESO ISS PBL12 END 24.837
HIERARCH ESO ISS PBLA12 START 135.5
HIERARCH ESO ISS PBLA12 END 135.5
HIERARCH ESO ISS PBL13 START 25.742
HIERARCH ESO ISS PBL13 END 25.784
HIERARCH ESO ISS PBLA13 START 60.4
HIERARCH ESO ISS PBLA13 END 60.4
HIERARCH ESO ISS PBL14 START 20.5
HIERARCH ESO ISS PBL14 END 20.523
HIERARCH ESO ISS PBLA14 START 111.66
HIERARCH ESO ISS PBLA14 END 111.659
HIERARCH ESO ISS PBL23 START 30.839
HIERARCH ESO ISS PBL23 END 30.845
HIERARCH ESO ISS PBLA23 START 9.3
HIERARCH ESO ISS PBLA23 END 9.4
HIERARCH ESO ISS PBL24 START 10.275
HIERARCH ESO ISS PBL24 END 10.277
HIERARCH ESO ISS PBLA24 START 9.227
HIERARCH ESO ISS PBLA24 END 9.318
HIERARCH ESO ISS PBL34 START 20.565
HIERARCH ESO ISS PBL34 END 20.569
HIERARCH ESO ISS PBLA34 START 189.288
HIERARCH ESO ISS PBLA34 END 189.38
HIERARCH ESO ISS AMBI TAU0 START 0.005222
HIERARCH ESO ISS AMBI TAU0 END 0.004659
HIERARCH ESO ISS AMBI TEMP 13.26
HIERARCH ESO ISS AMBI FWHM START 0.8
HIERARCH ESO ISS AMBI FWHM END 0.86