Exposure
ID
PIONI.2021-10-30T02:49:28.851_1
Header ID
PIONI.2021-10-30T02:49:28.851
Date updated
2021-10-30 02:56:52 UTC+0000
Release date
2022-10-30 02:56:52 UTC+0000
UTC Start
2021-10-30 02:49:28.851
UTC End
2021-10-30 02:49:54.451
MJD Start
59517.1176950391
MJD End
59517.1179913354
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0055015
Ambient temperature (°C)
13.96
Seeing (arcsec)
0.74
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 24.2400 24.2530 135.6000 135.6000
A0-D0 23.3330 23.3790 55.5000 55.6000
A0-C1 19.1010 19.1300 111.9640 111.9540
B2-D0 30.6040 30.6070 4.2000 4.3000
B2-C1 10.1970 10.1980 4.2070 4.3020
D0-C1 20.4070 20.4090 184.2630 184.3580
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 59517.1176950391
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 24.24
HIERARCH ESO ISS PBL12 END 24.253
HIERARCH ESO ISS PBLA12 START 135.6
HIERARCH ESO ISS PBLA12 END 135.6
HIERARCH ESO ISS PBL13 START 23.333
HIERARCH ESO ISS PBL13 END 23.379
HIERARCH ESO ISS PBLA13 START 55.5
HIERARCH ESO ISS PBLA13 END 55.6
HIERARCH ESO ISS PBL14 START 19.101
HIERARCH ESO ISS PBL14 END 19.13
HIERARCH ESO ISS PBLA14 START 111.964
HIERARCH ESO ISS PBLA14 END 111.954
HIERARCH ESO ISS PBL23 START 30.604
HIERARCH ESO ISS PBL23 END 30.607
HIERARCH ESO ISS PBLA23 START 4.2
HIERARCH ESO ISS PBLA23 END 4.3
HIERARCH ESO ISS PBL24 START 10.197
HIERARCH ESO ISS PBL24 END 10.198
HIERARCH ESO ISS PBLA24 START 4.207
HIERARCH ESO ISS PBLA24 END 4.302
HIERARCH ESO ISS PBL34 START 20.407
HIERARCH ESO ISS PBL34 END 20.409
HIERARCH ESO ISS PBLA34 START 184.263
HIERARCH ESO ISS PBLA34 END 184.358
HIERARCH ESO ISS AMBI TAU0 START 0.005257
HIERARCH ESO ISS AMBI TAU0 END 0.005746
HIERARCH ESO ISS AMBI TEMP 13.96
HIERARCH ESO ISS AMBI FWHM START 0.78
HIERARCH ESO ISS AMBI FWHM END 0.7