Exposure
ID
PIONI.2021-11-04T05:21:32.904_1
Header ID
PIONI.2021-11-04T05:21:32.904
Date updated
2021-11-04 05:30:54 UTC+0000
Release date
2022-11-04 05:30:54 UTC+0000
UTC Start
2021-11-04 05:21:32.904
UTC End
2021-11-04 05:21:58.504
MJD Start
59522.2232975038
MJD End
59522.2235938001
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.006836
Ambient temperature (°C)
10.57
Seeing (arcsec)
0.43
Observation
ID
48737
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
36501
Name
eps Eri
RA
53.227324
DEC
-9.45816
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
K0 B2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-B2 121.3100 121.3460 240.6000 240.7000
K0-D0 95.6490 95.6680 251.7000 251.7000
K0-J3 54.9750 54.9590 332.1380 332.1940
B2-D0 32.9840 32.9930 26.9000 27.0000
B2-J3 134.4870 134.5320 36.5230 36.5730
D0-J3 102.1150 102.1500 39.6150 39.6630
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 59522.2232975038
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.227324
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 B2
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 121.31
HIERARCH ESO ISS PBL12 END 121.346
HIERARCH ESO ISS PBLA12 START 240.6
HIERARCH ESO ISS PBLA12 END 240.7
HIERARCH ESO ISS PBL13 START 95.649
HIERARCH ESO ISS PBL13 END 95.668
HIERARCH ESO ISS PBLA13 START 251.7
HIERARCH ESO ISS PBLA13 END 251.7
HIERARCH ESO ISS PBL14 START 54.975
HIERARCH ESO ISS PBL14 END 54.959
HIERARCH ESO ISS PBLA14 START 332.138
HIERARCH ESO ISS PBLA14 END 332.194
HIERARCH ESO ISS PBL23 START 32.984
HIERARCH ESO ISS PBL23 END 32.993
HIERARCH ESO ISS PBLA23 START 26.9
HIERARCH ESO ISS PBLA23 END 27.0
HIERARCH ESO ISS PBL24 START 134.487
HIERARCH ESO ISS PBL24 END 134.532
HIERARCH ESO ISS PBLA24 START 36.523
HIERARCH ESO ISS PBLA24 END 36.573
HIERARCH ESO ISS PBL34 START 102.115
HIERARCH ESO ISS PBL34 END 102.15
HIERARCH ESO ISS PBLA34 START 39.615
HIERARCH ESO ISS PBLA34 END 39.663
HIERARCH ESO ISS AMBI TAU0 START 0.006836
HIERARCH ESO ISS AMBI TAU0 END 0.006836
HIERARCH ESO ISS AMBI TEMP 10.57
HIERARCH ESO ISS AMBI FWHM START 0.43
HIERARCH ESO ISS AMBI FWHM END 0.43