Exposure
ID
PIONI.2021-11-07T05:50:42.378_1
Header ID
PIONI.2021-11-07T05:50:42.378
Date updated
2021-11-07 06:00:43 UTC+0000
Release date
2022-11-07 06:00:42 UTC+0000
UTC Start
2021-11-07 05:50:42.378
UTC End
2021-11-07 05:51:07.978
MJD Start
59525.2435460361
MJD End
59525.2438423324
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.003657
Ambient temperature (°C)
12.08
Seeing (arcsec)
0.82
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 67.1600 67.1270 273.3000 273.3000
K0-D0 95.6250 95.6040 253.3000 253.4000
K0-J3 53.7900 53.7720 336.3980 336.4660
G2-D0 39.7370 39.7440 218.2000 218.2000
G2-J3 64.3280 64.3370 45.0360 45.0690
D0-J3 103.8890 103.9050 42.4200 42.4540
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 59525.2435460361
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 67.16
HIERARCH ESO ISS PBL12 END 67.127
HIERARCH ESO ISS PBLA12 START 273.3
HIERARCH ESO ISS PBLA12 END 273.3
HIERARCH ESO ISS PBL13 START 95.625
HIERARCH ESO ISS PBL13 END 95.604
HIERARCH ESO ISS PBLA13 START 253.3
HIERARCH ESO ISS PBLA13 END 253.4
HIERARCH ESO ISS PBL14 START 53.79
HIERARCH ESO ISS PBL14 END 53.772
HIERARCH ESO ISS PBLA14 START 336.398
HIERARCH ESO ISS PBLA14 END 336.466
HIERARCH ESO ISS PBL23 START 39.737
HIERARCH ESO ISS PBL23 END 39.744
HIERARCH ESO ISS PBLA23 START 218.2
HIERARCH ESO ISS PBLA23 END 218.2
HIERARCH ESO ISS PBL24 START 64.328
HIERARCH ESO ISS PBL24 END 64.337
HIERARCH ESO ISS PBLA24 START 45.036
HIERARCH ESO ISS PBLA24 END 45.069
HIERARCH ESO ISS PBL34 START 103.889
HIERARCH ESO ISS PBL34 END 103.905
HIERARCH ESO ISS PBLA34 START 42.42
HIERARCH ESO ISS PBLA34 END 42.454
HIERARCH ESO ISS AMBI TAU0 START 0.003657
HIERARCH ESO ISS AMBI TAU0 END 0.003657
HIERARCH ESO ISS AMBI TEMP 12.08
HIERARCH ESO ISS AMBI FWHM START 0.82
HIERARCH ESO ISS AMBI FWHM END 0.82