Exposure
ID
PIONI.2021-10-29T05:48:18.776_1
Header ID
PIONI.2021-10-29T05:48:18.776
Date updated
2021-10-29 05:56:24 UTC+0000
Release date
2022-10-29 05:56:24 UTC+0000
UTC Start
2021-10-29 05:48:18.776
UTC End
2021-10-29 05:48:44.376
MJD Start
59516.241883981
MJD End
59516.2421802773
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0053385
Ambient temperature (°C)
12.5
Seeing (arcsec)
0.51
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 24.6850 24.6770 141.9000 141.9000
A0-D0 31.9260 31.9320 71.8000 71.9000
A0-C1 22.4310 22.4240 115.4410 115.4740
B2-D0 33.0330 33.0420 27.2000 27.3000
B2-C1 11.0030 11.0060 27.1620 27.2170
D0-C1 22.0300 22.0360 207.2260 207.2810
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 59516.241883981
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 24.685
HIERARCH ESO ISS PBL12 END 24.677
HIERARCH ESO ISS PBLA12 START 141.9
HIERARCH ESO ISS PBLA12 END 141.9
HIERARCH ESO ISS PBL13 START 31.926
HIERARCH ESO ISS PBL13 END 31.932
HIERARCH ESO ISS PBLA13 START 71.8
HIERARCH ESO ISS PBLA13 END 71.9
HIERARCH ESO ISS PBL14 START 22.431
HIERARCH ESO ISS PBL14 END 22.424
HIERARCH ESO ISS PBLA14 START 115.441
HIERARCH ESO ISS PBLA14 END 115.474
HIERARCH ESO ISS PBL23 START 33.033
HIERARCH ESO ISS PBL23 END 33.042
HIERARCH ESO ISS PBLA23 START 27.2
HIERARCH ESO ISS PBLA23 END 27.3
HIERARCH ESO ISS PBL24 START 11.003
HIERARCH ESO ISS PBL24 END 11.006
HIERARCH ESO ISS PBLA24 START 27.162
HIERARCH ESO ISS PBLA24 END 27.217
HIERARCH ESO ISS PBL34 START 22.03
HIERARCH ESO ISS PBL34 END 22.036
HIERARCH ESO ISS PBLA34 START 207.226
HIERARCH ESO ISS PBLA34 END 207.281
HIERARCH ESO ISS AMBI TAU0 START 0.00494
HIERARCH ESO ISS AMBI TAU0 END 0.005737
HIERARCH ESO ISS AMBI TEMP 12.5
HIERARCH ESO ISS AMBI FWHM START 0.55
HIERARCH ESO ISS AMBI FWHM END 0.47