Exposure
ID
PIONI.2021-11-07T05:18:59.583_1
Header ID
PIONI.2021-11-07T05:18:59.583
Date updated
2021-11-07 05:26:19 UTC+0000
Release date
2022-11-07 05:26:19 UTC+0000
UTC Start
2021-11-07 05:18:59.583
UTC End
2021-11-07 05:19:25.183
MJD Start
59525.2215229534
MJD End
59525.2218192497
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.005935
Ambient temperature (°C)
12.36
Seeing (arcsec)
0.515
Observation
ID
48772
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
36529
Name
eps Eri
RA
53.227885
DEC
-9.45816
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
K0 G2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-G2 68.2620 68.2530 271.9000 272.0000
K0-D0 95.8810 95.8910 252.1000 252.1000
K0-J3 54.7210 54.7050 333.0230 333.0820
G2-D0 39.2330 39.2450 215.9000 216.0000
G2-J3 63.5790 63.5990 43.0490 43.0920
D0-J3 102.6250 102.6560 40.3300 40.3750
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 59525.2215229534
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.227885
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 G2
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 68.262
HIERARCH ESO ISS PBL12 END 68.253
HIERARCH ESO ISS PBLA12 START 271.9
HIERARCH ESO ISS PBLA12 END 272.0
HIERARCH ESO ISS PBL13 START 95.881
HIERARCH ESO ISS PBL13 END 95.891
HIERARCH ESO ISS PBLA13 START 252.1
HIERARCH ESO ISS PBLA13 END 252.1
HIERARCH ESO ISS PBL14 START 54.721
HIERARCH ESO ISS PBL14 END 54.705
HIERARCH ESO ISS PBLA14 START 333.023
HIERARCH ESO ISS PBLA14 END 333.082
HIERARCH ESO ISS PBL23 START 39.233
HIERARCH ESO ISS PBL23 END 39.245
HIERARCH ESO ISS PBLA23 START 215.9
HIERARCH ESO ISS PBLA23 END 216.0
HIERARCH ESO ISS PBL24 START 63.579
HIERARCH ESO ISS PBL24 END 63.599
HIERARCH ESO ISS PBLA24 START 43.049
HIERARCH ESO ISS PBLA24 END 43.092
HIERARCH ESO ISS PBL34 START 102.625
HIERARCH ESO ISS PBL34 END 102.656
HIERARCH ESO ISS PBLA34 START 40.33
HIERARCH ESO ISS PBLA34 END 40.375
HIERARCH ESO ISS AMBI TAU0 START 0.005728
HIERARCH ESO ISS AMBI TAU0 END 0.006142
HIERARCH ESO ISS AMBI TEMP 12.36
HIERARCH ESO ISS AMBI FWHM START 0.51
HIERARCH ESO ISS AMBI FWHM END 0.52