Exposure
ID
PIONI.2021-10-29T05:09:42.293_1
Header ID
PIONI.2021-10-29T05:09:42.293
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 05:09:42.293
UTC End
2021-10-29 05:10:07.893
MJD Start
59516.2150728311
MJD End
59516.2153691274
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0036585
Ambient temperature (°C)
12.77
Seeing (arcsec)
0.625
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 25.1330 25.1290 139.1000 139.1000
A0-D0 31.1820 31.1990 69.8000 69.8000
A0-C1 22.6190 22.6200 113.6350 113.6590
B2-D0 32.3970 32.4070 23.3000 23.3000
B2-C1 10.7920 10.7950 23.2070 23.2740
D0-C1 21.6050 21.6120 203.2730 203.3400
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 59516.2150728311
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 25.133
HIERARCH ESO ISS PBL12 END 25.129
HIERARCH ESO ISS PBLA12 START 139.1
HIERARCH ESO ISS PBLA12 END 139.1
HIERARCH ESO ISS PBL13 START 31.182
HIERARCH ESO ISS PBL13 END 31.199
HIERARCH ESO ISS PBLA13 START 69.8
HIERARCH ESO ISS PBLA13 END 69.8
HIERARCH ESO ISS PBL14 START 22.619
HIERARCH ESO ISS PBL14 END 22.62
HIERARCH ESO ISS PBLA14 START 113.635
HIERARCH ESO ISS PBLA14 END 113.659
HIERARCH ESO ISS PBL23 START 32.397
HIERARCH ESO ISS PBL23 END 32.407
HIERARCH ESO ISS PBLA23 START 23.3
HIERARCH ESO ISS PBLA23 END 23.3
HIERARCH ESO ISS PBL24 START 10.792
HIERARCH ESO ISS PBL24 END 10.795
HIERARCH ESO ISS PBLA24 START 23.207
HIERARCH ESO ISS PBLA24 END 23.274
HIERARCH ESO ISS PBL34 START 21.605
HIERARCH ESO ISS PBL34 END 21.612
HIERARCH ESO ISS PBLA34 START 203.273
HIERARCH ESO ISS PBLA34 END 203.34
HIERARCH ESO ISS AMBI TAU0 START 0.003691
HIERARCH ESO ISS AMBI TAU0 END 0.003626
HIERARCH ESO ISS AMBI TEMP 12.77
HIERARCH ESO ISS AMBI FWHM START 0.66
HIERARCH ESO ISS AMBI FWHM END 0.59