Exposure
ID
PIONI.2021-11-05T05:46:59.227_1
Header ID
PIONI.2021-11-05T05:46:59.227
Date updated
2021-11-05 05:56:39 UTC+0000
Release date
2022-11-05 05:56:39 UTC+0000
UTC Start
2021-11-05 05:46:59.226
UTC End
2021-11-05 05:47:24.826
MJD Start
59523.2409632653
MJD End
59523.2412595616
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.005976
Ambient temperature (°C)
11.09
Seeing (arcsec)
0.375
Observation
ID
48754
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
36515
Name
eps Eri
RA
53.227323
DEC
-9.45816
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
K0 B2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-B2 122.3270 122.3320 242.1000 242.1000
K0-D0 95.9090 95.8990 252.9000 253.0000
K0-J3 54.1370 54.1200 335.1090 335.1750
B2-D0 33.4020 33.4100 29.5000 29.5000
B2-J3 136.3450 136.3760 38.7410 38.7810
D0-J3 103.5210 103.5430 41.7250 41.7630
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 59523.2409632653
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.227323
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 K0
HIERARCH ESO ISS CONF STATION2 B2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 J3
EXPTIME 25.6
HIERARCH ESO DET DIT 0.0005
HIERARCH ESO DET NDIT 51200
HIERARCH ESO ISS PBL12 START 122.327
HIERARCH ESO ISS PBL12 END 122.332
HIERARCH ESO ISS PBLA12 START 242.1
HIERARCH ESO ISS PBLA12 END 242.1
HIERARCH ESO ISS PBL13 START 95.909
HIERARCH ESO ISS PBL13 END 95.899
HIERARCH ESO ISS PBLA13 START 252.9
HIERARCH ESO ISS PBLA13 END 253.0
HIERARCH ESO ISS PBL14 START 54.137
HIERARCH ESO ISS PBL14 END 54.12
HIERARCH ESO ISS PBLA14 START 335.109
HIERARCH ESO ISS PBLA14 END 335.175
HIERARCH ESO ISS PBL23 START 33.402
HIERARCH ESO ISS PBL23 END 33.41
HIERARCH ESO ISS PBLA23 START 29.5
HIERARCH ESO ISS PBLA23 END 29.5
HIERARCH ESO ISS PBL24 START 136.345
HIERARCH ESO ISS PBL24 END 136.376
HIERARCH ESO ISS PBLA24 START 38.741
HIERARCH ESO ISS PBLA24 END 38.781
HIERARCH ESO ISS PBL34 START 103.521
HIERARCH ESO ISS PBL34 END 103.543
HIERARCH ESO ISS PBLA34 START 41.725
HIERARCH ESO ISS PBLA34 END 41.763
HIERARCH ESO ISS AMBI TAU0 START 0.006331
HIERARCH ESO ISS AMBI TAU0 END 0.005621
HIERARCH ESO ISS AMBI TEMP 11.09
HIERARCH ESO ISS AMBI FWHM START 0.36
HIERARCH ESO ISS AMBI FWHM END 0.39