Exposure
ID
GRAVI.2021-11-27T05:42:04.743_1
Header ID
GRAVI.2021-11-27T05:42:04.743
Date updated
2021-11-27 05:56:32 UTC+0000
Release date
2022-11-27 05:56:31 UTC+0000
UTC Start
2021-11-27 05:42:04.743
UTC End
2021-11-27 05:43:40.743
MJD Start
59545.2375549
MJD End
59545.2386660111
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.005906
Ambient temperature (°C)
11.41
Seeing (arcsec)
0.585
Observation
ID
49038
Category
science
Program ID
108.224U.001
Program Title
SPATIALLY RESOLVING BETELGEUSE AND VY CMA, THE CORNERSTONES OF THE RED SUPERGIANT FAMILY
Program Type
Normal
PI / COI
MONTARGES/ LEBRE/ DUPREE/ HUMPHREYS/ CANNON/ LAGADEC/ SCICLUNA/ KERVELLA/ DE KOTER/ LOPEZ ARISTE/ SANCHEZ/ PALADINI/ DECIN/ KRAVCHENKO/ WITTKOWSKI/ NORRIS/ CHIAVASSA/ RIDGWAY/ PERRIN/ HAUBOIS/ CANTALLOUBE/ RAU/ BRUNO
Target
ID
36687
Name
Betelgeuse
RA
88.790833
DEC
7.40712
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
A0 B2 D0 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B2 23.8040 23.7210 136.6000 136.7000
A0-D0 30.5780 30.7020 74.2000 74.2000
A0-C1 22.4780 22.4430 112.9640 112.8980
B2-D0 28.7570 28.8720 27.1000 27.4000
B2-C1 9.5790 9.6170 27.0020 27.3410
D0-C1 19.1780 19.2550 207.0760 207.4140
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 108.224U.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 59545.2375549
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME Betelgeuse
HIERARCH ESO INS SOBJ NAME Betelgeuse
RA 88.790833
DEC 7.40712
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE SPLIT
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 A0
HIERARCH ESO ISS CONF STATION2 B2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 194.0
HIERARCH ESO DET2 SEQ1 DIT 0.3
HIERARCH ESO DET2 NDIT 320
HIERARCH ESO ISS PBL12 START 23.804
HIERARCH ESO ISS PBL12 END 23.721
HIERARCH ESO ISS PBLA12 START 136.6
HIERARCH ESO ISS PBLA12 END 136.7
HIERARCH ESO ISS PBL13 START 30.578
HIERARCH ESO ISS PBL13 END 30.702
HIERARCH ESO ISS PBLA13 START 74.2
HIERARCH ESO ISS PBLA13 END 74.2
HIERARCH ESO ISS PBL14 START 22.478
HIERARCH ESO ISS PBL14 END 22.443
HIERARCH ESO ISS PBLA14 START 112.964
HIERARCH ESO ISS PBLA14 END 112.898
HIERARCH ESO ISS PBL23 START 28.757
HIERARCH ESO ISS PBL23 END 28.872
HIERARCH ESO ISS PBLA23 START 27.1
HIERARCH ESO ISS PBLA23 END 27.4
HIERARCH ESO ISS PBL24 START 9.579
HIERARCH ESO ISS PBL24 END 9.617
HIERARCH ESO ISS PBLA24 START 27.002
HIERARCH ESO ISS PBLA24 END 27.341
HIERARCH ESO ISS PBL34 START 19.178
HIERARCH ESO ISS PBL34 END 19.255
HIERARCH ESO ISS PBLA34 START 207.076
HIERARCH ESO ISS PBLA34 END 207.414
HIERARCH ESO ISS AMBI TAU0 START 0.006006
HIERARCH ESO ISS AMBI TAU0 END 0.005806
HIERARCH ESO ISS AMBI TEMP 11.41
HIERARCH ESO ISS AMBI FWHM START 0.57
HIERARCH ESO ISS AMBI FWHM END 0.6