Exposure
ID
GRAVI.2021-05-23T00:05:07.447_2
Header ID
GRAVI.2021-05-23T00:05:07.447
Date updated
2021-09-29 14:27:19 UTC+0000
Release date
2022-05-23 00:20:43 UTC+0000
UTC Start
2021-05-23 00:05:07.447
UTC End
2021-05-23 00:10:27.447
MJD Start
59357.00355842
MJD End
59357.0072621237
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.0056475
Ambient temperature (°C)
11.89
Seeing (arcsec)
0.45
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 50.9680 50.9630 0.6000 1.5000
U1-U3 95.4590 95.4110 5.6000 6.6000
U1-U4 130.2040 130.1960 24.9150 26.1630
U2-U3 44.8970 44.8660 11.2000 12.3000
U2-U4 86.3390 86.5180 38.9740 40.3720
U3-U4 51.0980 51.4880 63.1480 64.6170
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 59357.00355842
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 50.968
HIERARCH ESO ISS PBL12 END 50.963
HIERARCH ESO ISS PBLA12 START 0.6
HIERARCH ESO ISS PBLA12 END 1.5
HIERARCH ESO ISS PBL13 START 95.459
HIERARCH ESO ISS PBL13 END 95.411
HIERARCH ESO ISS PBLA13 START 5.6
HIERARCH ESO ISS PBLA13 END 6.6
HIERARCH ESO ISS PBL14 START 130.204
HIERARCH ESO ISS PBL14 END 130.196
HIERARCH ESO ISS PBLA14 START 24.915
HIERARCH ESO ISS PBLA14 END 26.163
HIERARCH ESO ISS PBL23 START 44.897
HIERARCH ESO ISS PBL23 END 44.866
HIERARCH ESO ISS PBLA23 START 11.2
HIERARCH ESO ISS PBLA23 END 12.3
HIERARCH ESO ISS PBL24 START 86.339
HIERARCH ESO ISS PBL24 END 86.518
HIERARCH ESO ISS PBLA24 START 38.974
HIERARCH ESO ISS PBLA24 END 40.372
HIERARCH ESO ISS PBL34 START 51.098
HIERARCH ESO ISS PBL34 END 51.488
HIERARCH ESO ISS PBLA34 START 63.148
HIERARCH ESO ISS PBLA34 END 64.617
HIERARCH ESO ISS AMBI TAU0 START 0.005809
HIERARCH ESO ISS AMBI TAU0 END 0.005486
HIERARCH ESO ISS AMBI TEMP 11.89
HIERARCH ESO ISS AMBI FWHM START 0.44
HIERARCH ESO ISS AMBI FWHM END 0.46
HIERARCH ESO FT ROBJ NAME AlphaCenB_2021_05_22
HIERARCH ESO FT ROBJ ALPHA 143925.133
HIERARCH ESO FT ROBJ DELTA -604949.581