Exposure
ID
GRAVI.2021-05-23T00:23:31.493_1
Header ID
GRAVI.2021-05-23T00:23:31.493
Date updated
2021-09-29 14:27:19 UTC+0000
Release date
2022-05-23 00:40:25 UTC+0000
UTC Start
2021-05-23 00:23:31.493
UTC End
2021-05-23 00:28:51.493
MJD Start
59357.01633673
MJD End
59357.0200404337
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.007756
Ambient temperature (°C)
11.61
Seeing (arcsec)
0.48
Observation
ID
47437
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
35577
Name
StarS1
RA
219.859958
DEC
-60.83039
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 50.9340 50.9120 3.6000 4.5000
U1-U3 95.2760 95.2030 8.7000 9.7000
U1-U4 130.1620 130.1390 28.9150 30.1520
U2-U3 44.7850 44.7430 14.6000 15.7000
U2-U4 86.9110 87.0870 43.4430 44.8180
U3-U4 52.3460 52.7290 67.8160 69.2360
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 59357.01633673
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME AlphaCenB_2021_05_22
HIERARCH ESO INS SOBJ NAME StarS1
RA 219.859958
DEC -60.83039
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 342.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 32
HIERARCH ESO ISS PBL12 START 50.934
HIERARCH ESO ISS PBL12 END 50.912
HIERARCH ESO ISS PBLA12 START 3.6
HIERARCH ESO ISS PBLA12 END 4.5
HIERARCH ESO ISS PBL13 START 95.276
HIERARCH ESO ISS PBL13 END 95.203
HIERARCH ESO ISS PBLA13 START 8.7
HIERARCH ESO ISS PBLA13 END 9.7
HIERARCH ESO ISS PBL14 START 130.162
HIERARCH ESO ISS PBL14 END 130.139
HIERARCH ESO ISS PBLA14 START 28.915
HIERARCH ESO ISS PBLA14 END 30.152
HIERARCH ESO ISS PBL23 START 44.785
HIERARCH ESO ISS PBL23 END 44.743
HIERARCH ESO ISS PBLA23 START 14.6
HIERARCH ESO ISS PBLA23 END 15.7
HIERARCH ESO ISS PBL24 START 86.911
HIERARCH ESO ISS PBL24 END 87.087
HIERARCH ESO ISS PBLA24 START 43.443
HIERARCH ESO ISS PBLA24 END 44.818
HIERARCH ESO ISS PBL34 START 52.346
HIERARCH ESO ISS PBL34 END 52.729
HIERARCH ESO ISS PBLA34 START 67.816
HIERARCH ESO ISS PBLA34 END 69.236
HIERARCH ESO ISS AMBI TAU0 START 0.008737
HIERARCH ESO ISS AMBI TAU0 END 0.006775
HIERARCH ESO ISS AMBI TEMP 11.61
HIERARCH ESO ISS AMBI FWHM START 0.53
HIERARCH ESO ISS AMBI FWHM END 0.43
HIERARCH ESO FT ROBJ NAME AlphaCenB_2021_05_22
HIERARCH ESO FT ROBJ ALPHA 143925.133
HIERARCH ESO FT ROBJ DELTA -604949.581