Exposure
ID
PIONI.2021-10-29T03:23:38.395_1
Header ID
PIONI.2021-10-29T03:23:38.395
Date updated
2021-10-29 03:31:29 UTC+0000
Release date
2022-10-29 03:31:29 UTC+0000
UTC Start
2021-10-29 03:23:38.395
UTC End
2021-10-29 03:24:03.995
MJD Start
59516.1414166093
MJD End
59516.1417129056
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.005983
Ambient temperature (°C)
13.25
Seeing (arcsec)
0.8
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 24.8000 24.8090 135.5000 135.5000
A0-D0 25.6060 25.6480 60.1000 60.2000
A0-C1 20.4270 20.4490 111.6640 111.6620
B2-D0 30.8210 30.8260 9.0000 9.1000
B2-C1 10.2680 10.2700 8.9360 9.0240
D0-C1 20.5520 20.5560 188.9970 189.0850
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 59516.1414166093
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 24.8
HIERARCH ESO ISS PBL12 END 24.809
HIERARCH ESO ISS PBLA12 START 135.5
HIERARCH ESO ISS PBLA12 END 135.5
HIERARCH ESO ISS PBL13 START 25.606
HIERARCH ESO ISS PBL13 END 25.648
HIERARCH ESO ISS PBLA13 START 60.1
HIERARCH ESO ISS PBLA13 END 60.2
HIERARCH ESO ISS PBL14 START 20.427
HIERARCH ESO ISS PBL14 END 20.449
HIERARCH ESO ISS PBLA14 START 111.664
HIERARCH ESO ISS PBLA14 END 111.662
HIERARCH ESO ISS PBL23 START 30.821
HIERARCH ESO ISS PBL23 END 30.826
HIERARCH ESO ISS PBLA23 START 9.0
HIERARCH ESO ISS PBLA23 END 9.1
HIERARCH ESO ISS PBL24 START 10.268
HIERARCH ESO ISS PBL24 END 10.27
HIERARCH ESO ISS PBLA24 START 8.936
HIERARCH ESO ISS PBLA24 END 9.024
HIERARCH ESO ISS PBL34 START 20.552
HIERARCH ESO ISS PBL34 END 20.556
HIERARCH ESO ISS PBLA34 START 188.997
HIERARCH ESO ISS PBLA34 END 189.085
HIERARCH ESO ISS AMBI TAU0 START 0.005983
HIERARCH ESO ISS AMBI TAU0 END 0.005983
HIERARCH ESO ISS AMBI TEMP 13.25
HIERARCH ESO ISS AMBI FWHM START 0.8
HIERARCH ESO ISS AMBI FWHM END 0.8