Exposure
ID
GRAVI.2023-05-21T02:10:40.075_1
Header ID
GRAVI.2023-05-21T02:10:40.075
Date updated
2023-05-21 02:25:29 UTC+0000
Release date
2024-05-21 02:25:29 UTC+0000
UTC Start
2023-05-21 02:10:40.075
UTC End
2023-05-21 02:17:20.075
MJD Start
60085.09074161
MJD End
60085.0953712396
Exposure time (s)
400.0
Validation level
1
Tau 0: Coherence time (s)
0.0018265
Ambient temperature (°C)
10.29
Seeing (arcsec)
1.07
Observation
ID
55504
Category
science
Program ID
106.217D.005
Program Title
HIGH PRECISION GRAVITY ASTROMETRY OF THREE STELLAR CONJUNCTIONS OF ALPHA CENTAURI A & B
Program Type
Monitoring
PI / COI
KERVELLA/ MÉRAND/ LACOUR/ FORVEILLE/ ARENOU/ THEVENIN/ BRANDNER/ STRAUBMEIER/ GARCIA/ WOILLEZ/ EISENHAUER/ PAUMARD/ PERRIN/ ROUSSELET-PERRAUT
Target
ID
41110
Name
StarS2
RA
219.846448
DEC
-60.83182
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
MEDIUM-SPLIT
Instrument sub-mode
DUAL
Stations
A0 G1 J2 K0
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 82.5090 83.0470 95.1000 96.6000
A0-J2 126.8260 127.1690 75.0000 76.6000
A0-K0 127.8660 127.7870 57.8220 59.3250
G1-J2 56.8990 56.7650 45.1000 46.5000
G1-K0 79.8050 79.5930 19.0480 20.1440
J2-K0 38.0810 38.2440 337.9710 338.8740
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 106.217D.005
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60085.09074161
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME AlphaCenA_2023_05_20
HIERARCH ESO INS SOBJ NAME StarS2
RA 219.846448
DEC -60.83182
HIERARCH ESO INS SPEC RES MEDIUM
HIERARCH ESO INS POLA MODE SPLIT
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 A0
HIERARCH ESO ISS CONF STATION2 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 K0
EXPTIME 414.0
HIERARCH ESO DET2 SEQ1 DIT 100.0
HIERARCH ESO DET2 NDIT 4
HIERARCH ESO ISS PBL12 START 82.509
HIERARCH ESO ISS PBL12 END 83.047
HIERARCH ESO ISS PBLA12 START 95.1
HIERARCH ESO ISS PBLA12 END 96.6
HIERARCH ESO ISS PBL13 START 126.826
HIERARCH ESO ISS PBL13 END 127.169
HIERARCH ESO ISS PBLA13 START 75.0
HIERARCH ESO ISS PBLA13 END 76.6
HIERARCH ESO ISS PBL14 START 127.866
HIERARCH ESO ISS PBL14 END 127.787
HIERARCH ESO ISS PBLA14 START 57.822
HIERARCH ESO ISS PBLA14 END 59.325
HIERARCH ESO ISS PBL23 START 56.899
HIERARCH ESO ISS PBL23 END 56.765
HIERARCH ESO ISS PBLA23 START 45.1
HIERARCH ESO ISS PBLA23 END 46.5
HIERARCH ESO ISS PBL24 START 79.805
HIERARCH ESO ISS PBL24 END 79.593
HIERARCH ESO ISS PBLA24 START 19.048
HIERARCH ESO ISS PBLA24 END 20.144
HIERARCH ESO ISS PBL34 START 38.081
HIERARCH ESO ISS PBL34 END 38.244
HIERARCH ESO ISS PBLA34 START 337.971
HIERARCH ESO ISS PBLA34 END 338.874
HIERARCH ESO ISS AMBI TAU0 START 0.00182
HIERARCH ESO ISS AMBI TAU0 END 0.001833
HIERARCH ESO ISS AMBI TEMP 10.29
HIERARCH ESO ISS AMBI FWHM START 1.01
HIERARCH ESO ISS AMBI FWHM END 1.13
HIERARCH ESO FT ROBJ NAME AlphaCenA_2023_05_20
HIERARCH ESO FT ROBJ ALPHA 143924.156
HIERARCH ESO FT ROBJ DELTA -604955.216