Exposure
ID
GRAVI.2021-05-23T00:54:07.570_1
Header ID
GRAVI.2021-05-23T00:54:07.570
Date updated
2021-09-29 14:27:19 UTC+0000
Release date
2022-05-23 01:00:52 UTC+0000
UTC Start
2021-05-23 00:54:07.570
UTC End
2021-05-23 00:55:11.570
MJD Start
59357.03758762
MJD End
59357.0383283607
Exposure time (s)
64.0
Validation level
1
Tau 0: Coherence time (s)
0.0069765
Ambient temperature (°C)
11.16
Seeing (arcsec)
0.38
Observation
ID
47439
Category
science
Program ID
106.217D.002
Program Title
HIGH PRECISION GRAVITY ASTROMETRY OF THREE STELLAR CONJUNCTIONS OF ALPHA CENTAURI A & B
Program Type
Monitoring
PI / COI
KERVELLA/ M\XC3\XA9RAND/ LACOUR/ FORVEILLE/ ARENOU/ THEVENIN/ BRANDNER/ STRAUBMEIER/ GARCIA/ WOILLEZ/ EISENHAUER/ PAUMARD/ PERRIN/ ROUSSELET-PERRAUT
Target
ID
35579
Name
WDSJ14077-4952B
RA
211.926027
DEC
-49.86689
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
MEDIUM-SPLIT
Instrument sub-mode
DUAL
Stations
U1 U2 U3 U4
Projected baselines
Baseline Length start Length end Angle start Angle end
U1-U2 54.3050 54.2900 12.6000 12.8000
U1-U3 99.8000 99.7690 18.2000 18.5000
U1-U4 130.1160 130.1300 41.9610 42.2630
U2-U3 46.0710 46.0580 24.9000 25.1000
U2-U4 86.9900 87.0670 59.8050 60.1290
U3-U4 55.8390 55.9590 87.9940 88.2930
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 106.217D.002
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 59357.03758762
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD 123227
HIERARCH ESO INS SOBJ NAME WDSJ14077-4952B
RA 211.926027
DEC -49.86689
HIERARCH ESO INS SPEC RES MEDIUM
HIERARCH ESO INS POLA MODE SPLIT
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 U1
HIERARCH ESO ISS CONF STATION2 U2
HIERARCH ESO ISS CONF STATION3 U3
HIERARCH ESO ISS CONF STATION4 U4
EXPTIME 94.0
HIERARCH ESO DET2 SEQ1 DIT 1.0
HIERARCH ESO DET2 NDIT 64
HIERARCH ESO ISS PBL12 START 54.305
HIERARCH ESO ISS PBL12 END 54.29
HIERARCH ESO ISS PBLA12 START 12.6
HIERARCH ESO ISS PBLA12 END 12.8
HIERARCH ESO ISS PBL13 START 99.8
HIERARCH ESO ISS PBL13 END 99.769
HIERARCH ESO ISS PBLA13 START 18.2
HIERARCH ESO ISS PBLA13 END 18.5
HIERARCH ESO ISS PBL14 START 130.116
HIERARCH ESO ISS PBL14 END 130.13
HIERARCH ESO ISS PBLA14 START 41.961
HIERARCH ESO ISS PBLA14 END 42.263
HIERARCH ESO ISS PBL23 START 46.071
HIERARCH ESO ISS PBL23 END 46.058
HIERARCH ESO ISS PBLA23 START 24.9
HIERARCH ESO ISS PBLA23 END 25.1
HIERARCH ESO ISS PBL24 START 86.99
HIERARCH ESO ISS PBL24 END 87.067
HIERARCH ESO ISS PBLA24 START 59.805
HIERARCH ESO ISS PBLA24 END 60.129
HIERARCH ESO ISS PBL34 START 55.839
HIERARCH ESO ISS PBL34 END 55.959
HIERARCH ESO ISS PBLA34 START 87.994
HIERARCH ESO ISS PBLA34 END 88.293
HIERARCH ESO ISS AMBI TAU0 START 0.006316
HIERARCH ESO ISS AMBI TAU0 END 0.007637
HIERARCH ESO ISS AMBI TEMP 11.16
HIERARCH ESO ISS AMBI FWHM START 0.4
HIERARCH ESO ISS AMBI FWHM END 0.36
HIERARCH ESO FT ROBJ NAME WDSJ14077-4952A
HIERARCH ESO FT ROBJ ALPHA 140741.527
HIERARCH ESO FT ROBJ DELTA -495203.430