Exposure
ID
PIONI.2021-10-29T03:05:44.383_1
Header ID
PIONI.2021-10-29T03:05:44.383
Date updated
2021-10-29 03:17:02 UTC+0000
Release date
2022-10-29 03:17:02 UTC+0000
UTC Start
2021-10-29 03:05:44.382
UTC End
2021-10-29 03:06:09.982
MJD Start
59516.128985907
MJD End
59516.1292822033
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.004152
Ambient temperature (°C)
13.48
Seeing (arcsec)
0.63
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 24.4930 24.5040 135.5000 135.5000
A0-D0 24.2820 24.3260 57.5000 57.6000
A0-C1 19.6770 19.7030 111.7860 111.7790
B2-D0 30.6740 30.6780 6.2000 6.3000
B2-C1 10.2200 10.2210 6.1560 6.2470
D0-C1 20.4540 20.4570 186.2140 186.3050
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 59516.128985907
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 24.493
HIERARCH ESO ISS PBL12 END 24.504
HIERARCH ESO ISS PBLA12 START 135.5
HIERARCH ESO ISS PBLA12 END 135.5
HIERARCH ESO ISS PBL13 START 24.282
HIERARCH ESO ISS PBL13 END 24.326
HIERARCH ESO ISS PBLA13 START 57.5
HIERARCH ESO ISS PBLA13 END 57.6
HIERARCH ESO ISS PBL14 START 19.677
HIERARCH ESO ISS PBL14 END 19.703
HIERARCH ESO ISS PBLA14 START 111.786
HIERARCH ESO ISS PBLA14 END 111.779
HIERARCH ESO ISS PBL23 START 30.674
HIERARCH ESO ISS PBL23 END 30.678
HIERARCH ESO ISS PBLA23 START 6.2
HIERARCH ESO ISS PBLA23 END 6.3
HIERARCH ESO ISS PBL24 START 10.22
HIERARCH ESO ISS PBL24 END 10.221
HIERARCH ESO ISS PBLA24 START 6.156
HIERARCH ESO ISS PBLA24 END 6.247
HIERARCH ESO ISS PBL34 START 20.454
HIERARCH ESO ISS PBL34 END 20.457
HIERARCH ESO ISS PBLA34 START 186.214
HIERARCH ESO ISS PBLA34 END 186.305
HIERARCH ESO ISS AMBI TAU0 START 0.004318
HIERARCH ESO ISS AMBI TAU0 END 0.003986
HIERARCH ESO ISS AMBI TEMP 13.48
HIERARCH ESO ISS AMBI FWHM START 0.65
HIERARCH ESO ISS AMBI FWHM END 0.61