Exposure
ID
GRAVI.2021-11-27T06:16:22.830_1
Header ID
GRAVI.2021-11-27T06:16:22.830
Date updated
2021-11-27 06:31:20 UTC+0000
Release date
2022-11-27 06:31:20 UTC+0000
UTC Start
2021-11-27 06:16:22.830
UTC End
2021-11-27 06:17:58.830
MJD Start
59545.26137535
MJD End
59545.2624864611
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.0044255
Ambient temperature (°C)
11.08
Seeing (arcsec)
0.615
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 22.8210 22.7180 138.1000 138.3000
A0-D0 31.6110 31.6760 73.7000 73.6000
A0-C1 21.9160 21.8410 112.4620 112.4380
B2-D0 29.9700 30.0820 30.3000 30.5000
B2-C1 9.9820 10.0200 30.2250 30.4850
D0-C1 19.9870 20.0620 210.2930 210.5530
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 59545.26137535
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 22.821
HIERARCH ESO ISS PBL12 END 22.718
HIERARCH ESO ISS PBLA12 START 138.1
HIERARCH ESO ISS PBLA12 END 138.3
HIERARCH ESO ISS PBL13 START 31.611
HIERARCH ESO ISS PBL13 END 31.676
HIERARCH ESO ISS PBLA13 START 73.7
HIERARCH ESO ISS PBLA13 END 73.6
HIERARCH ESO ISS PBL14 START 21.916
HIERARCH ESO ISS PBL14 END 21.841
HIERARCH ESO ISS PBLA14 START 112.462
HIERARCH ESO ISS PBLA14 END 112.438
HIERARCH ESO ISS PBL23 START 29.97
HIERARCH ESO ISS PBL23 END 30.082
HIERARCH ESO ISS PBLA23 START 30.3
HIERARCH ESO ISS PBLA23 END 30.5
HIERARCH ESO ISS PBL24 START 9.982
HIERARCH ESO ISS PBL24 END 10.02
HIERARCH ESO ISS PBLA24 START 30.225
HIERARCH ESO ISS PBLA24 END 30.485
HIERARCH ESO ISS PBL34 START 19.987
HIERARCH ESO ISS PBL34 END 20.062
HIERARCH ESO ISS PBLA34 START 210.293
HIERARCH ESO ISS PBLA34 END 210.553
HIERARCH ESO ISS AMBI TAU0 START 0.005124
HIERARCH ESO ISS AMBI TAU0 END 0.003727
HIERARCH ESO ISS AMBI TEMP 11.08
HIERARCH ESO ISS AMBI FWHM START 0.61
HIERARCH ESO ISS AMBI FWHM END 0.62