Exposure
ID
PIONI.2021-11-07T05:50:04.456_1
Header ID
PIONI.2021-11-07T05:50:04.456
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 05:50:04.456
UTC End
2021-11-07 05:50:30.056
MJD Start
59525.2431071317
MJD End
59525.243403428
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.00365
Ambient temperature (°C)
11.95
Seeing (arcsec)
0.835
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 67.1940 67.1620 273.2000 273.3000
K0-D0 95.6460 95.6260 253.3000 253.3000
K0-J3 53.8090 53.7910 336.3250 336.3940
G2-D0 39.7290 39.7370 218.1000 218.2000
G2-J3 64.3190 64.3270 45.0020 45.0350
D0-J3 103.8720 103.8880 42.3840 42.4180
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 59525.2431071317
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 67.194
HIERARCH ESO ISS PBL12 END 67.162
HIERARCH ESO ISS PBLA12 START 273.2
HIERARCH ESO ISS PBLA12 END 273.3
HIERARCH ESO ISS PBL13 START 95.646
HIERARCH ESO ISS PBL13 END 95.626
HIERARCH ESO ISS PBLA13 START 253.3
HIERARCH ESO ISS PBLA13 END 253.3
HIERARCH ESO ISS PBL14 START 53.809
HIERARCH ESO ISS PBL14 END 53.791
HIERARCH ESO ISS PBLA14 START 336.325
HIERARCH ESO ISS PBLA14 END 336.394
HIERARCH ESO ISS PBL23 START 39.729
HIERARCH ESO ISS PBL23 END 39.737
HIERARCH ESO ISS PBLA23 START 218.1
HIERARCH ESO ISS PBLA23 END 218.2
HIERARCH ESO ISS PBL24 START 64.319
HIERARCH ESO ISS PBL24 END 64.327
HIERARCH ESO ISS PBLA24 START 45.002
HIERARCH ESO ISS PBLA24 END 45.035
HIERARCH ESO ISS PBL34 START 103.872
HIERARCH ESO ISS PBL34 END 103.888
HIERARCH ESO ISS PBLA34 START 42.384
HIERARCH ESO ISS PBLA34 END 42.418
HIERARCH ESO ISS AMBI TAU0 START 0.003643
HIERARCH ESO ISS AMBI TAU0 END 0.003657
HIERARCH ESO ISS AMBI TEMP 11.95
HIERARCH ESO ISS AMBI FWHM START 0.85
HIERARCH ESO ISS AMBI FWHM END 0.82