Exposure
ID
PIONI.2021-10-29T04:14:38.045_1
Header ID
PIONI.2021-10-29T04:14:38.045
Date updated
2021-10-29 04:21:21 UTC+0000
Release date
2022-10-29 04:21:20 UTC+0000
UTC Start
2021-10-29 04:14:38.045
UTC End
2021-10-29 04:15:03.645
MJD Start
59516.1768292291
MJD End
59516.1771255254
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0044855
Ambient temperature (°C)
13.21
Seeing (arcsec)
0.485
Observation
ID
48669
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
36449
Name
eps Eri
RA
53.226765
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 25.2730 25.2750 136.5000 136.5000
A0-D0 28.8560 28.8890 65.7000 65.8000
A0-C1 21.9750 21.9880 112.0740 112.0850
B2-D0 31.4740 31.4830 16.4000 16.5000
B2-C1 10.4850 10.4880 16.3550 16.4370
D0-C1 20.9880 20.9950 196.4210 196.5020
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 59516.1768292291
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.226765
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 25.273
HIERARCH ESO ISS PBL12 END 25.275
HIERARCH ESO ISS PBLA12 START 136.5
HIERARCH ESO ISS PBLA12 END 136.5
HIERARCH ESO ISS PBL13 START 28.856
HIERARCH ESO ISS PBL13 END 28.889
HIERARCH ESO ISS PBLA13 START 65.7
HIERARCH ESO ISS PBLA13 END 65.8
HIERARCH ESO ISS PBL14 START 21.975
HIERARCH ESO ISS PBL14 END 21.988
HIERARCH ESO ISS PBLA14 START 112.074
HIERARCH ESO ISS PBLA14 END 112.085
HIERARCH ESO ISS PBL23 START 31.474
HIERARCH ESO ISS PBL23 END 31.483
HIERARCH ESO ISS PBLA23 START 16.4
HIERARCH ESO ISS PBLA23 END 16.5
HIERARCH ESO ISS PBL24 START 10.485
HIERARCH ESO ISS PBL24 END 10.488
HIERARCH ESO ISS PBLA24 START 16.355
HIERARCH ESO ISS PBLA24 END 16.437
HIERARCH ESO ISS PBL34 START 20.988
HIERARCH ESO ISS PBL34 END 20.995
HIERARCH ESO ISS PBLA34 START 196.421
HIERARCH ESO ISS PBLA34 END 196.502
HIERARCH ESO ISS AMBI TAU0 START 0.004423
HIERARCH ESO ISS AMBI TAU0 END 0.004548
HIERARCH ESO ISS AMBI TEMP 13.21
HIERARCH ESO ISS AMBI FWHM START 0.49
HIERARCH ESO ISS AMBI FWHM END 0.48