Exposure
ID
PIONI.2021-10-29T05:28:44.872_1
Header ID
PIONI.2021-10-29T05:28:44.872
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 05:28:44.872
UTC End
2021-10-29 05:29:10.472
MJD Start
59516.2282971335
MJD End
59516.2285934298
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.003922
Ambient temperature (°C)
12.68
Seeing (arcsec)
0.63
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 24.9440 24.9370 140.4000 140.4000
A0-D0 31.6460 31.6570 70.9000 70.9000
A0-C1 22.5910 22.5880 114.4520 114.4800
B2-D0 32.7200 32.7300 25.3000 25.4000
B2-C1 10.8990 10.9030 25.2530 25.3140
D0-C1 21.8200 21.8270 205.3180 205.3800
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 59516.2282971335
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 24.944
HIERARCH ESO ISS PBL12 END 24.937
HIERARCH ESO ISS PBLA12 START 140.4
HIERARCH ESO ISS PBLA12 END 140.4
HIERARCH ESO ISS PBL13 START 31.646
HIERARCH ESO ISS PBL13 END 31.657
HIERARCH ESO ISS PBLA13 START 70.9
HIERARCH ESO ISS PBLA13 END 70.9
HIERARCH ESO ISS PBL14 START 22.591
HIERARCH ESO ISS PBL14 END 22.588
HIERARCH ESO ISS PBLA14 START 114.452
HIERARCH ESO ISS PBLA14 END 114.48
HIERARCH ESO ISS PBL23 START 32.72
HIERARCH ESO ISS PBL23 END 32.73
HIERARCH ESO ISS PBLA23 START 25.3
HIERARCH ESO ISS PBLA23 END 25.4
HIERARCH ESO ISS PBL24 START 10.899
HIERARCH ESO ISS PBL24 END 10.903
HIERARCH ESO ISS PBLA24 START 25.253
HIERARCH ESO ISS PBLA24 END 25.314
HIERARCH ESO ISS PBL34 START 21.82
HIERARCH ESO ISS PBL34 END 21.827
HIERARCH ESO ISS PBLA34 START 205.318
HIERARCH ESO ISS PBLA34 END 205.38
HIERARCH ESO ISS AMBI TAU0 START 0.003963
HIERARCH ESO ISS AMBI TAU0 END 0.003881
HIERARCH ESO ISS AMBI TEMP 12.68
HIERARCH ESO ISS AMBI FWHM START 0.69
HIERARCH ESO ISS AMBI FWHM END 0.57