Exposure
ID
PIONI.2021-10-29T02:41:19.228_1
Header ID
PIONI.2021-10-29T02:41:19.228
Date updated
2021-10-29 02:46:33 UTC+0000
Release date
2022-10-29 02:46:32 UTC+0000
UTC Start
2021-10-29 02:41:19.228
UTC End
2021-10-29 02:41:44.828
MJD Start
59516.1120281038
MJD End
59516.1123244001
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.003354
Ambient temperature (°C)
13.46
Seeing (arcsec)
0.875
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 23.9590 23.9740 135.8000 135.8000
A0-D0 22.3810 22.4290 53.3000 53.4000
A0-C1 18.4930 18.5240 112.2230 112.2080
B2-D0 30.5600 30.5610 2.3000 2.4000
B2-C1 10.1820 10.1830 2.2770 2.3730
D0-C1 20.3780 20.3790 182.3310 182.4270
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 59516.1120281038
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 23.959
HIERARCH ESO ISS PBL12 END 23.974
HIERARCH ESO ISS PBLA12 START 135.8
HIERARCH ESO ISS PBLA12 END 135.8
HIERARCH ESO ISS PBL13 START 22.381
HIERARCH ESO ISS PBL13 END 22.429
HIERARCH ESO ISS PBLA13 START 53.3
HIERARCH ESO ISS PBLA13 END 53.4
HIERARCH ESO ISS PBL14 START 18.493
HIERARCH ESO ISS PBL14 END 18.524
HIERARCH ESO ISS PBLA14 START 112.223
HIERARCH ESO ISS PBLA14 END 112.208
HIERARCH ESO ISS PBL23 START 30.56
HIERARCH ESO ISS PBL23 END 30.561
HIERARCH ESO ISS PBLA23 START 2.3
HIERARCH ESO ISS PBLA23 END 2.4
HIERARCH ESO ISS PBL24 START 10.182
HIERARCH ESO ISS PBL24 END 10.183
HIERARCH ESO ISS PBLA24 START 2.277
HIERARCH ESO ISS PBLA24 END 2.373
HIERARCH ESO ISS PBL34 START 20.378
HIERARCH ESO ISS PBL34 END 20.379
HIERARCH ESO ISS PBLA34 START 182.331
HIERARCH ESO ISS PBLA34 END 182.427
HIERARCH ESO ISS AMBI TAU0 START 0.003621
HIERARCH ESO ISS AMBI TAU0 END 0.003087
HIERARCH ESO ISS AMBI TEMP 13.46
HIERARCH ESO ISS AMBI FWHM START 0.9
HIERARCH ESO ISS AMBI FWHM END 0.85