Exposure
ID
PIONI.2021-11-02T06:32:00.511_1
Header ID
PIONI.2021-11-02T06:32:00.511
Date updated
2021-11-02 06:41:03 UTC+0000
Release date
2022-11-02 06:41:03 UTC+0000
UTC Start
2021-11-02 06:32:00.512
UTC End
2021-11-02 06:32:26.112
MJD Start
59520.272228145
MJD End
59520.2725244413
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0024145
Ambient temperature (°C)
10.61
Seeing (arcsec)
1.235
Observation
ID
48710
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
36481
Name
eps Eri
RA
53.226764
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 23.6000 23.5870 148.0000 148.1000
A0-D0 31.5120 31.4980 74.0000 74.1000
A0-C1 21.1850 21.1670 119.5830 119.6350
B2-D0 33.7500 33.7550 31.8000 31.9000
B2-C1 11.2420 11.2440 31.7800 31.8170
D0-C1 22.5080 22.5110 211.8390 211.8770
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 59520.272228145
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.226764
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 23.6
HIERARCH ESO ISS PBL12 END 23.587
HIERARCH ESO ISS PBLA12 START 148.0
HIERARCH ESO ISS PBLA12 END 148.1
HIERARCH ESO ISS PBL13 START 31.512
HIERARCH ESO ISS PBL13 END 31.498
HIERARCH ESO ISS PBLA13 START 74.0
HIERARCH ESO ISS PBLA13 END 74.1
HIERARCH ESO ISS PBL14 START 21.185
HIERARCH ESO ISS PBL14 END 21.167
HIERARCH ESO ISS PBLA14 START 119.583
HIERARCH ESO ISS PBLA14 END 119.635
HIERARCH ESO ISS PBL23 START 33.75
HIERARCH ESO ISS PBL23 END 33.755
HIERARCH ESO ISS PBLA23 START 31.8
HIERARCH ESO ISS PBLA23 END 31.9
HIERARCH ESO ISS PBL24 START 11.242
HIERARCH ESO ISS PBL24 END 11.244
HIERARCH ESO ISS PBLA24 START 31.78
HIERARCH ESO ISS PBLA24 END 31.817
HIERARCH ESO ISS PBL34 START 22.508
HIERARCH ESO ISS PBL34 END 22.511
HIERARCH ESO ISS PBLA34 START 211.839
HIERARCH ESO ISS PBLA34 END 211.877
HIERARCH ESO ISS AMBI TAU0 START 0.002415
HIERARCH ESO ISS AMBI TAU0 END 0.002414
HIERARCH ESO ISS AMBI TEMP 10.61
HIERARCH ESO ISS AMBI FWHM START 1.33
HIERARCH ESO ISS AMBI FWHM END 1.14