Exposure
ID
PIONI.2021-10-29T05:10:20.466_1
Header ID
PIONI.2021-10-29T05:10:20.466
Date updated
2021-10-29 05:17:08 UTC+0000
Release date
2022-10-29 05:17:07 UTC+0000
UTC Start
2021-10-29 05:10:20.466
UTC End
2021-10-29 05:10:46.066
MJD Start
59516.215514651
MJD End
59516.2158109473
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.003626
Ambient temperature (°C)
12.76
Seeing (arcsec)
0.59
Observation
ID
48675
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
36455
Name
eps Eri
RA
53.226766
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 25.1280 25.1230 139.1000 139.1000
A0-D0 31.2010 31.2170 69.8000 69.9000
A0-C1 22.6200 22.6210 113.6660 113.6830
B2-D0 32.4080 32.4180 23.3000 23.4000
B2-C1 10.7960 10.7990 23.2850 23.3450
D0-C1 21.6120 21.6190 203.3510 203.4100
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 59516.215514651
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.226766
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 25.128
HIERARCH ESO ISS PBL12 END 25.123
HIERARCH ESO ISS PBLA12 START 139.1
HIERARCH ESO ISS PBLA12 END 139.1
HIERARCH ESO ISS PBL13 START 31.201
HIERARCH ESO ISS PBL13 END 31.217
HIERARCH ESO ISS PBLA13 START 69.8
HIERARCH ESO ISS PBLA13 END 69.9
HIERARCH ESO ISS PBL14 START 22.62
HIERARCH ESO ISS PBL14 END 22.621
HIERARCH ESO ISS PBLA14 START 113.666
HIERARCH ESO ISS PBLA14 END 113.683
HIERARCH ESO ISS PBL23 START 32.408
HIERARCH ESO ISS PBL23 END 32.418
HIERARCH ESO ISS PBLA23 START 23.3
HIERARCH ESO ISS PBLA23 END 23.4
HIERARCH ESO ISS PBL24 START 10.796
HIERARCH ESO ISS PBL24 END 10.799
HIERARCH ESO ISS PBLA24 START 23.285
HIERARCH ESO ISS PBLA24 END 23.345
HIERARCH ESO ISS PBL34 START 21.612
HIERARCH ESO ISS PBL34 END 21.619
HIERARCH ESO ISS PBLA34 START 203.351
HIERARCH ESO ISS PBLA34 END 203.41
HIERARCH ESO ISS AMBI TAU0 START 0.003626
HIERARCH ESO ISS AMBI TAU0 END 0.003626
HIERARCH ESO ISS AMBI TEMP 12.76
HIERARCH ESO ISS AMBI FWHM START 0.59
HIERARCH ESO ISS AMBI FWHM END 0.59