Exposure
ID
PIONI.2021-10-30T03:18:30.661_1
Header ID
PIONI.2021-10-30T03:18:30.661
Date updated
2021-10-30 03:26:18 UTC+0000
Release date
2022-10-30 03:26:18 UTC+0000
UTC Start
2021-10-30 03:18:30.661
UTC End
2021-10-30 03:18:56.261
MJD Start
59517.1378548737
MJD End
59517.13815117
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.006709
Ambient temperature (°C)
14.59
Seeing (arcsec)
0.595
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 24.7820 24.7910 135.5000 135.5000
A0-D0 25.5200 25.5630 59.9000 60.0000
A0-C1 20.3800 20.4030 111.6670 111.6650
B2-D0 30.8090 30.8150 8.8000 8.9000
B2-C1 10.2650 10.2670 8.7520 8.8440
D0-C1 20.5450 20.5480 188.8130 188.9050
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 59517.1378548737
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 24.782
HIERARCH ESO ISS PBL12 END 24.791
HIERARCH ESO ISS PBLA12 START 135.5
HIERARCH ESO ISS PBLA12 END 135.5
HIERARCH ESO ISS PBL13 START 25.52
HIERARCH ESO ISS PBL13 END 25.563
HIERARCH ESO ISS PBLA13 START 59.9
HIERARCH ESO ISS PBLA13 END 60.0
HIERARCH ESO ISS PBL14 START 20.38
HIERARCH ESO ISS PBL14 END 20.403
HIERARCH ESO ISS PBLA14 START 111.667
HIERARCH ESO ISS PBLA14 END 111.665
HIERARCH ESO ISS PBL23 START 30.809
HIERARCH ESO ISS PBL23 END 30.815
HIERARCH ESO ISS PBLA23 START 8.8
HIERARCH ESO ISS PBLA23 END 8.9
HIERARCH ESO ISS PBL24 START 10.265
HIERARCH ESO ISS PBL24 END 10.267
HIERARCH ESO ISS PBLA24 START 8.752
HIERARCH ESO ISS PBLA24 END 8.844
HIERARCH ESO ISS PBL34 START 20.545
HIERARCH ESO ISS PBL34 END 20.548
HIERARCH ESO ISS PBLA34 START 188.813
HIERARCH ESO ISS PBLA34 END 188.905
HIERARCH ESO ISS AMBI TAU0 START 0.006709
HIERARCH ESO ISS AMBI TAU0 END 0.006709
HIERARCH ESO ISS AMBI TEMP 14.59
HIERARCH ESO ISS AMBI FWHM START 0.53
HIERARCH ESO ISS AMBI FWHM END 0.66