Exposure
ID
PIONI.2021-10-29T05:46:24.336_1
Header ID
PIONI.2021-10-29T05:46:24.336
Date updated
2021-10-29 05:56:24 UTC+0000
Release date
2022-10-29 05:56:24 UTC+0000
UTC Start
2021-10-29 05:46:24.337
UTC End
2021-10-29 05:46:49.937
MJD Start
59516.2405594531
MJD End
59516.2408557494
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.0048375
Ambient temperature (°C)
12.56
Seeing (arcsec)
0.525
Observation
ID
48669
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
36449
Name
eps Eri
RA
53.226765
DEC
-9.45816
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 24.7130 24.7050 141.7000 141.8000
A0-D0 31.9080 31.9140 71.7000 71.8000
A0-C1 22.4520 22.4460 115.3300 115.3620
B2-D0 33.0030 33.0130 27.0000 27.1000
B2-C1 10.9940 10.9970 26.9760 27.0320
D0-C1 22.0100 22.0160 207.0400 207.0960
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 59516.2405594531
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME eps Eri
RA 53.226765
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 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 24.713
HIERARCH ESO ISS PBL12 END 24.705
HIERARCH ESO ISS PBLA12 START 141.7
HIERARCH ESO ISS PBLA12 END 141.8
HIERARCH ESO ISS PBL13 START 31.908
HIERARCH ESO ISS PBL13 END 31.914
HIERARCH ESO ISS PBLA13 START 71.7
HIERARCH ESO ISS PBLA13 END 71.8
HIERARCH ESO ISS PBL14 START 22.452
HIERARCH ESO ISS PBL14 END 22.446
HIERARCH ESO ISS PBLA14 START 115.33
HIERARCH ESO ISS PBLA14 END 115.362
HIERARCH ESO ISS PBL23 START 33.003
HIERARCH ESO ISS PBL23 END 33.013
HIERARCH ESO ISS PBLA23 START 27.0
HIERARCH ESO ISS PBLA23 END 27.1
HIERARCH ESO ISS PBL24 START 10.994
HIERARCH ESO ISS PBL24 END 10.997
HIERARCH ESO ISS PBLA24 START 26.976
HIERARCH ESO ISS PBLA24 END 27.032
HIERARCH ESO ISS PBL34 START 22.01
HIERARCH ESO ISS PBL34 END 22.016
HIERARCH ESO ISS PBLA34 START 207.04
HIERARCH ESO ISS PBLA34 END 207.096
HIERARCH ESO ISS AMBI TAU0 START 0.005006
HIERARCH ESO ISS AMBI TAU0 END 0.004669
HIERARCH ESO ISS AMBI TEMP 12.56
HIERARCH ESO ISS AMBI FWHM START 0.52
HIERARCH ESO ISS AMBI FWHM END 0.53