Exposure
ID
PIONI.2021-10-29T05:27:28.579_1
Header ID
PIONI.2021-10-29T05:27:28.579
Date updated
2021-10-29 05:36:21 UTC+0000
Release date
2022-10-29 05:36:21 UTC+0000
UTC Start
2021-10-29 05:27:28.579
UTC End
2021-10-29 05:27:54.179
MJD Start
59516.2274141051
MJD End
59516.2277104014
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.004317
Ambient temperature (°C)
12.66
Seeing (arcsec)
0.705
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 24.9590 24.9520 140.3000 140.3000
A0-D0 31.6210 31.6320 70.8000 70.8000
A0-C1 22.5970 22.5940 114.3930 114.4130
B2-D0 32.6990 32.7080 25.2000 25.2000
B2-C1 10.8920 10.8950 25.1230 25.1760
D0-C1 21.8060 21.8130 205.1880 205.2410
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 59516.2274141051
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 24.959
HIERARCH ESO ISS PBL12 END 24.952
HIERARCH ESO ISS PBLA12 START 140.3
HIERARCH ESO ISS PBLA12 END 140.3
HIERARCH ESO ISS PBL13 START 31.621
HIERARCH ESO ISS PBL13 END 31.632
HIERARCH ESO ISS PBLA13 START 70.8
HIERARCH ESO ISS PBLA13 END 70.8
HIERARCH ESO ISS PBL14 START 22.597
HIERARCH ESO ISS PBL14 END 22.594
HIERARCH ESO ISS PBLA14 START 114.393
HIERARCH ESO ISS PBLA14 END 114.413
HIERARCH ESO ISS PBL23 START 32.699
HIERARCH ESO ISS PBL23 END 32.708
HIERARCH ESO ISS PBLA23 START 25.2
HIERARCH ESO ISS PBLA23 END 25.2
HIERARCH ESO ISS PBL24 START 10.892
HIERARCH ESO ISS PBL24 END 10.895
HIERARCH ESO ISS PBLA24 START 25.123
HIERARCH ESO ISS PBLA24 END 25.176
HIERARCH ESO ISS PBL34 START 21.806
HIERARCH ESO ISS PBL34 END 21.813
HIERARCH ESO ISS PBLA34 START 205.188
HIERARCH ESO ISS PBLA34 END 205.241
HIERARCH ESO ISS AMBI TAU0 START 0.004671
HIERARCH ESO ISS AMBI TAU0 END 0.003963
HIERARCH ESO ISS AMBI TEMP 12.66
HIERARCH ESO ISS AMBI FWHM START 0.72
HIERARCH ESO ISS AMBI FWHM END 0.69