Exposure
ID
GRAVI.2021-05-23T01:28:58.659_2
Header ID
GRAVI.2021-05-23T01:28:58.659
Date updated
2021-09-29 14:27:19 UTC+0000
Release date
2022-05-23 01:45:38 UTC+0000
UTC Start
2021-05-23 01:28:58.659
UTC End
2021-05-23 01:34:18.659
MJD Start
59357.06179003
MJD End
59357.0654937337
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.007407
Ambient temperature (°C)
11.84
Seeing (arcsec)
0.44
Observation
ID
47438
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
35578
Name
AlphaCenB_2021_05_22
RA
219.854720833333
DEC
-60.8304391666667
Instrument
Interferometer
VLTI
Instrument
GRAVITY_FT
Instrument mode
LOW
Instrument sub-mode
DUAL
Stations
U1 U2 U3 U4
Projected baselines
Baseline Length start Length end Angle start Angle end
U1-U2 50.4000 50.3210 14.0000 14.9000
U1-U3 93.9290 93.7540 19.9000 20.9000
U1-U4 129.4450 129.3230 42.8290 44.0270
U2-U3 44.0950 44.0100 26.6000 27.6000
U2-U4 88.6760 88.7930 58.7240 60.0240
U3-U4 56.4410 56.7620 83.2790 84.5690
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 59357.06179003
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME AlphaCenB_2021_05_22
HIERARCH ESO INS SOBJ NAME StarS1
RA 219.860003
DEC -60.83037
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 50.4
HIERARCH ESO ISS PBL12 END 50.321
HIERARCH ESO ISS PBLA12 START 14.0
HIERARCH ESO ISS PBLA12 END 14.9
HIERARCH ESO ISS PBL13 START 93.929
HIERARCH ESO ISS PBL13 END 93.754
HIERARCH ESO ISS PBLA13 START 19.9
HIERARCH ESO ISS PBLA13 END 20.9
HIERARCH ESO ISS PBL14 START 129.445
HIERARCH ESO ISS PBL14 END 129.323
HIERARCH ESO ISS PBLA14 START 42.829
HIERARCH ESO ISS PBLA14 END 44.027
HIERARCH ESO ISS PBL23 START 44.095
HIERARCH ESO ISS PBL23 END 44.01
HIERARCH ESO ISS PBLA23 START 26.6
HIERARCH ESO ISS PBLA23 END 27.6
HIERARCH ESO ISS PBL24 START 88.676
HIERARCH ESO ISS PBL24 END 88.793
HIERARCH ESO ISS PBLA24 START 58.724
HIERARCH ESO ISS PBLA24 END 60.024
HIERARCH ESO ISS PBL34 START 56.441
HIERARCH ESO ISS PBL34 END 56.762
HIERARCH ESO ISS PBLA34 START 83.279
HIERARCH ESO ISS PBLA34 END 84.569
HIERARCH ESO ISS AMBI TAU0 START 0.007663
HIERARCH ESO ISS AMBI TAU0 END 0.007151
HIERARCH ESO ISS AMBI TEMP 11.84
HIERARCH ESO ISS AMBI FWHM START 0.43
HIERARCH ESO ISS AMBI FWHM END 0.45
HIERARCH ESO FT ROBJ NAME AlphaCenB_2021_05_22
HIERARCH ESO FT ROBJ ALPHA 143925.133
HIERARCH ESO FT ROBJ DELTA -604949.581