Exposure
ID
PIONI.2021-11-02T04:05:18.941_1
Header ID
PIONI.2021-11-02T04:05:18.941
Date updated
2021-11-02 04:11:56 UTC+0000
Release date
2021-11-02 04:05:18 UTC+0000
UTC Start
2021-11-02 04:05:18.941
UTC End
2021-11-02 04:05:44.541
MJD Start
59520.1703581079
MJD End
59520.1706544042
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0032925
Ambient temperature (°C)
11.33
Seeing (arcsec)
0.895
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 24.4660 24.4780 136.6000 136.5000
A0-D0 21.8120 21.8640 58.0000 58.1000
A0-C1 19.1220 19.1510 114.7020 114.6750
B2-D0 29.3800 29.3820 3.2000 3.3000
B2-C1 9.7890 9.7900 3.2070 3.3060
D0-C1 19.5900 19.5920 183.2640 183.3640
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 59520.1703581079
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 24.466
HIERARCH ESO ISS PBL12 END 24.478
HIERARCH ESO ISS PBLA12 START 136.6
HIERARCH ESO ISS PBLA12 END 136.5
HIERARCH ESO ISS PBL13 START 21.812
HIERARCH ESO ISS PBL13 END 21.864
HIERARCH ESO ISS PBLA13 START 58.0
HIERARCH ESO ISS PBLA13 END 58.1
HIERARCH ESO ISS PBL14 START 19.122
HIERARCH ESO ISS PBL14 END 19.151
HIERARCH ESO ISS PBLA14 START 114.702
HIERARCH ESO ISS PBLA14 END 114.675
HIERARCH ESO ISS PBL23 START 29.38
HIERARCH ESO ISS PBL23 END 29.382
HIERARCH ESO ISS PBLA23 START 3.2
HIERARCH ESO ISS PBLA23 END 3.3
HIERARCH ESO ISS PBL24 START 9.789
HIERARCH ESO ISS PBL24 END 9.79
HIERARCH ESO ISS PBLA24 START 3.207
HIERARCH ESO ISS PBLA24 END 3.306
HIERARCH ESO ISS PBL34 START 19.59
HIERARCH ESO ISS PBL34 END 19.592
HIERARCH ESO ISS PBLA34 START 183.264
HIERARCH ESO ISS PBLA34 END 183.364
HIERARCH ESO ISS AMBI TAU0 START 0.003352
HIERARCH ESO ISS AMBI TAU0 END 0.003233
HIERARCH ESO ISS AMBI TEMP 11.33
HIERARCH ESO ISS AMBI FWHM START 0.87
HIERARCH ESO ISS AMBI FWHM END 0.92