Exposure
ID
PIONI.2021-11-08T05:36:39.728_1
Header ID
PIONI.2021-11-08T05:36:39.728
Date updated
2021-11-08 05:46:13 UTC+0000
Release date
2022-11-08 05:46:13 UTC+0000
UTC Start
2021-11-08 05:36:39.728
UTC End
2021-11-08 05:37:05.328
MJD Start
59526.233793145
MJD End
59526.2340894413
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.005289
Ambient temperature (°C)
12.74
Seeing (arcsec)
0.65
Observation
ID
48812
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
36560
Name
eps Eri
RA
53.227322
DEC
-9.45816
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
A0 G1 J2 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 87.9620 87.9130 117.1000 117.2000
A0-J2 127.8080 127.7580 94.1000 94.1000
A0-J3 131.9720 131.9930 49.0290 49.0610
G1-J2 58.1890 58.1930 57.7000 57.8000
G1-J3 128.4300 128.4440 9.5710 9.6320
J2-J3 99.5490 99.5270 343.7550 343.8230
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 59526.233793145
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.227322
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 G1
HIERARCH ESO ISS CONF STATION3 J2
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 87.962
HIERARCH ESO ISS PBL12 END 87.913
HIERARCH ESO ISS PBLA12 START 117.1
HIERARCH ESO ISS PBLA12 END 117.2
HIERARCH ESO ISS PBL13 START 127.808
HIERARCH ESO ISS PBL13 END 127.758
HIERARCH ESO ISS PBLA13 START 94.1
HIERARCH ESO ISS PBLA13 END 94.1
HIERARCH ESO ISS PBL14 START 131.972
HIERARCH ESO ISS PBL14 END 131.993
HIERARCH ESO ISS PBLA14 START 49.029
HIERARCH ESO ISS PBLA14 END 49.061
HIERARCH ESO ISS PBL23 START 58.189
HIERARCH ESO ISS PBL23 END 58.193
HIERARCH ESO ISS PBLA23 START 57.7
HIERARCH ESO ISS PBLA23 END 57.8
HIERARCH ESO ISS PBL24 START 128.43
HIERARCH ESO ISS PBL24 END 128.444
HIERARCH ESO ISS PBLA24 START 9.571
HIERARCH ESO ISS PBLA24 END 9.632
HIERARCH ESO ISS PBL34 START 99.549
HIERARCH ESO ISS PBL34 END 99.527
HIERARCH ESO ISS PBLA34 START 343.755
HIERARCH ESO ISS PBLA34 END 343.823
HIERARCH ESO ISS AMBI TAU0 START 0.005289
HIERARCH ESO ISS AMBI TAU0 END 0.005289
HIERARCH ESO ISS AMBI TEMP 12.74
HIERARCH ESO ISS AMBI FWHM START 0.65
HIERARCH ESO ISS AMBI FWHM END 0.65