Exposure
ID
PIONI.2021-11-02T03:09:24.907_1
Header ID
PIONI.2021-11-02T03:09:24.907
Date updated
2021-11-02 03:16:31 UTC+0000
Release date
2022-11-02 03:16:31 UTC+0000
UTC Start
2021-11-02 03:09:24.907
UTC End
2021-11-02 03:09:50.507
MJD Start
59520.1315382798
MJD End
59520.1318345761
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0041495
Ambient temperature (°C)
12.15
Seeing (arcsec)
0.77
Observation
ID
48709
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
36480
Name
eps Eri
RA
53.226763
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 24.8220 24.8310 135.5000 135.5000
A0-D0 25.7130 25.7560 60.3000 60.4000
A0-C1 20.4850 20.5080 111.6600 111.6590
B2-D0 30.8350 30.8410 9.2000 9.3000
B2-C1 10.2730 10.2750 9.1650 9.2570
D0-C1 20.5620 20.5660 189.2260 189.3180
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 59520.1315382798
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.226763
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 24.822
HIERARCH ESO ISS PBL12 END 24.831
HIERARCH ESO ISS PBLA12 START 135.5
HIERARCH ESO ISS PBLA12 END 135.5
HIERARCH ESO ISS PBL13 START 25.713
HIERARCH ESO ISS PBL13 END 25.756
HIERARCH ESO ISS PBLA13 START 60.3
HIERARCH ESO ISS PBLA13 END 60.4
HIERARCH ESO ISS PBL14 START 20.485
HIERARCH ESO ISS PBL14 END 20.508
HIERARCH ESO ISS PBLA14 START 111.66
HIERARCH ESO ISS PBLA14 END 111.659
HIERARCH ESO ISS PBL23 START 30.835
HIERARCH ESO ISS PBL23 END 30.841
HIERARCH ESO ISS PBLA23 START 9.2
HIERARCH ESO ISS PBLA23 END 9.3
HIERARCH ESO ISS PBL24 START 10.273
HIERARCH ESO ISS PBL24 END 10.275
HIERARCH ESO ISS PBLA24 START 9.165
HIERARCH ESO ISS PBLA24 END 9.257
HIERARCH ESO ISS PBL34 START 20.562
HIERARCH ESO ISS PBL34 END 20.566
HIERARCH ESO ISS PBLA34 START 189.226
HIERARCH ESO ISS PBLA34 END 189.318
HIERARCH ESO ISS AMBI TAU0 START 0.0044
HIERARCH ESO ISS AMBI TAU0 END 0.003899
HIERARCH ESO ISS AMBI TEMP 12.15
HIERARCH ESO ISS AMBI FWHM START 0.69
HIERARCH ESO ISS AMBI FWHM END 0.85