Exposure
ID
PIONI.2021-11-02T04:03:24.780_1
Header ID
PIONI.2021-11-02T04:03:24.780
Date updated
2021-11-02 04:11:56 UTC+0000
Release date
2021-11-02 04:03:24 UTC+0000
UTC Start
2021-11-02 04:03:24.780
UTC End
2021-11-02 04:03:50.380
MJD Start
59520.1690368098
MJD End
59520.1693331061
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.003662
Ambient temperature (°C)
11.5
Seeing (arcsec)
0.845
Observation
ID
48708
Category
calibrator
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
36479
Name
bet Eri
RA
76.960917
DEC
-5.08681
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
A0 B2 D0 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B2 24.4290 24.4410 136.6000 136.6000
A0-D0 21.6470 21.6990 57.6000 57.7000
A0-C1 19.0310 19.0600 114.7860 114.7590
B2-D0 29.3720 29.3740 2.9000 3.0000
B2-C1 9.7870 9.7880 2.8910 2.9910
D0-C1 19.5850 19.5870 182.9480 183.0480
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 108.227F.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE FRINGE,OBJECT
MJD-OBS 59520.1690368098
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME bet Eri
RA 76.960917
DEC -5.08681
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 B2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 25.6
HIERARCH ESO DET DIT 0.0005
HIERARCH ESO DET NDIT 51200
HIERARCH ESO ISS PBL12 START 24.429
HIERARCH ESO ISS PBL12 END 24.441
HIERARCH ESO ISS PBLA12 START 136.6
HIERARCH ESO ISS PBLA12 END 136.6
HIERARCH ESO ISS PBL13 START 21.647
HIERARCH ESO ISS PBL13 END 21.699
HIERARCH ESO ISS PBLA13 START 57.6
HIERARCH ESO ISS PBLA13 END 57.7
HIERARCH ESO ISS PBL14 START 19.031
HIERARCH ESO ISS PBL14 END 19.06
HIERARCH ESO ISS PBLA14 START 114.786
HIERARCH ESO ISS PBLA14 END 114.759
HIERARCH ESO ISS PBL23 START 29.372
HIERARCH ESO ISS PBL23 END 29.374
HIERARCH ESO ISS PBLA23 START 2.9
HIERARCH ESO ISS PBLA23 END 3.0
HIERARCH ESO ISS PBL24 START 9.787
HIERARCH ESO ISS PBL24 END 9.788
HIERARCH ESO ISS PBLA24 START 2.891
HIERARCH ESO ISS PBLA24 END 2.991
HIERARCH ESO ISS PBL34 START 19.585
HIERARCH ESO ISS PBL34 END 19.587
HIERARCH ESO ISS PBLA34 START 182.948
HIERARCH ESO ISS PBLA34 END 183.048
HIERARCH ESO ISS AMBI TAU0 START 0.003662
HIERARCH ESO ISS AMBI TAU0 END 0.003662
HIERARCH ESO ISS AMBI TEMP 11.5
HIERARCH ESO ISS AMBI FWHM START 0.82
HIERARCH ESO ISS AMBI FWHM END 0.87