Exposure
ID
PIONI.2021-11-12T04:54:45.118_1
Header ID
PIONI.2021-11-12T04:54:45.118
Date updated
2021-11-12 05:01:13 UTC+0000
Release date
2022-11-12 05:01:13 UTC+0000
UTC Start
2021-11-12 04:54:45.118
UTC End
2021-11-12 04:55:10.718
MJD Start
59530.2046888685
MJD End
59530.2049851648
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.003818
Ambient temperature (°C)
12.84
Seeing (arcsec)
0.69
Observation
ID
48855
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
36582
Name
eps Eri
RA
53.227319
DEC
-9.45816
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
A0 G1 J2 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 89.6680 89.6390 115.5000 115.5000
A0-J2 129.1520 129.1400 92.9000 93.0000
A0-J3 130.5850 130.6270 47.4120 47.4530
G1-J2 57.7220 57.7390 56.4000 56.4000
G1-J3 127.8930 127.9030 6.8300 6.8940
J2-J3 100.5220 100.4990 340.9300 340.9910
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 59530.2046888685
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.227319
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 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 J3
EXPTIME 25.6
HIERARCH ESO DET DIT 0.0005
HIERARCH ESO DET NDIT 51200
HIERARCH ESO ISS PBL12 START 89.668
HIERARCH ESO ISS PBL12 END 89.639
HIERARCH ESO ISS PBLA12 START 115.5
HIERARCH ESO ISS PBLA12 END 115.5
HIERARCH ESO ISS PBL13 START 129.152
HIERARCH ESO ISS PBL13 END 129.14
HIERARCH ESO ISS PBLA13 START 92.9
HIERARCH ESO ISS PBLA13 END 93.0
HIERARCH ESO ISS PBL14 START 130.585
HIERARCH ESO ISS PBL14 END 130.627
HIERARCH ESO ISS PBLA14 START 47.412
HIERARCH ESO ISS PBLA14 END 47.453
HIERARCH ESO ISS PBL23 START 57.722
HIERARCH ESO ISS PBL23 END 57.739
HIERARCH ESO ISS PBLA23 START 56.4
HIERARCH ESO ISS PBLA23 END 56.4
HIERARCH ESO ISS PBL24 START 127.893
HIERARCH ESO ISS PBL24 END 127.903
HIERARCH ESO ISS PBLA24 START 6.83
HIERARCH ESO ISS PBLA24 END 6.894
HIERARCH ESO ISS PBL34 START 100.522
HIERARCH ESO ISS PBL34 END 100.499
HIERARCH ESO ISS PBLA34 START 340.93
HIERARCH ESO ISS PBLA34 END 340.991
HIERARCH ESO ISS AMBI TAU0 START 0.003818
HIERARCH ESO ISS AMBI TAU0 END 0.003818
HIERARCH ESO ISS AMBI TEMP 12.84
HIERARCH ESO ISS AMBI FWHM START 0.69
HIERARCH ESO ISS AMBI FWHM END 0.69