Exposure
ID
PIONI.2021-10-29T02:42:35.297_1
Header ID
PIONI.2021-10-29T02:42:35.297
Date updated
2021-10-29 02:51:24 UTC+0000
Release date
2022-10-29 02:51:24 UTC+0000
UTC Start
2021-10-29 02:42:35.297
UTC End
2021-10-29 02:43:00.897
MJD Start
59516.1129085263
MJD End
59516.1132048226
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.003087
Ambient temperature (°C)
13.38
Seeing (arcsec)
0.85
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 23.9900 24.0040 135.7000 135.7000
A0-D0 22.4820 22.5290 53.6000 53.7000
A0-C1 18.5580 18.5890 112.1920 112.1770
B2-D0 30.5630 30.5650 2.5000 2.6000
B2-C1 10.1830 10.1840 2.4800 2.5760
D0-C1 20.3800 20.3810 182.5330 182.6300
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 59516.1129085263
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 23.99
HIERARCH ESO ISS PBL12 END 24.004
HIERARCH ESO ISS PBLA12 START 135.7
HIERARCH ESO ISS PBLA12 END 135.7
HIERARCH ESO ISS PBL13 START 22.482
HIERARCH ESO ISS PBL13 END 22.529
HIERARCH ESO ISS PBLA13 START 53.6
HIERARCH ESO ISS PBLA13 END 53.7
HIERARCH ESO ISS PBL14 START 18.558
HIERARCH ESO ISS PBL14 END 18.589
HIERARCH ESO ISS PBLA14 START 112.192
HIERARCH ESO ISS PBLA14 END 112.177
HIERARCH ESO ISS PBL23 START 30.563
HIERARCH ESO ISS PBL23 END 30.565
HIERARCH ESO ISS PBLA23 START 2.5
HIERARCH ESO ISS PBLA23 END 2.6
HIERARCH ESO ISS PBL24 START 10.183
HIERARCH ESO ISS PBL24 END 10.184
HIERARCH ESO ISS PBLA24 START 2.48
HIERARCH ESO ISS PBLA24 END 2.576
HIERARCH ESO ISS PBL34 START 20.38
HIERARCH ESO ISS PBL34 END 20.381
HIERARCH ESO ISS PBLA34 START 182.533
HIERARCH ESO ISS PBLA34 END 182.63
HIERARCH ESO ISS AMBI TAU0 START 0.003087
HIERARCH ESO ISS AMBI TAU0 END 0.003087
HIERARCH ESO ISS AMBI TEMP 13.38
HIERARCH ESO ISS AMBI FWHM START 0.85
HIERARCH ESO ISS AMBI FWHM END 0.85