Exposure
ID
GRAVI.2021-11-27T05:33:31.722_1
Header ID
GRAVI.2021-11-27T05:33:31.722
Date updated
2021-11-27 05:51:15 UTC+0000
Release date
2022-11-27 05:51:15 UTC+0000
UTC Start
2021-11-27 05:33:31.722
UTC End
2021-11-27 05:35:07.722
MJD Start
59545.23161715
MJD End
59545.2327282611
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.006294
Ambient temperature (°C)
11.46
Seeing (arcsec)
0.555
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 24.0160 23.9380 136.4000 136.5000
A0-D0 30.2200 30.3590 74.3000 74.3000
A0-C1 22.5530 22.5280 113.1610 113.0840
B2-D0 28.4530 28.5670 26.1000 26.5000
B2-C1 9.4780 9.5160 26.0610 26.4200
D0-C1 18.9750 19.0510 206.1360 206.4940
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 59545.23161715
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 24.016
HIERARCH ESO ISS PBL12 END 23.938
HIERARCH ESO ISS PBLA12 START 136.4
HIERARCH ESO ISS PBLA12 END 136.5
HIERARCH ESO ISS PBL13 START 30.22
HIERARCH ESO ISS PBL13 END 30.359
HIERARCH ESO ISS PBLA13 START 74.3
HIERARCH ESO ISS PBLA13 END 74.3
HIERARCH ESO ISS PBL14 START 22.553
HIERARCH ESO ISS PBL14 END 22.528
HIERARCH ESO ISS PBLA14 START 113.161
HIERARCH ESO ISS PBLA14 END 113.084
HIERARCH ESO ISS PBL23 START 28.453
HIERARCH ESO ISS PBL23 END 28.567
HIERARCH ESO ISS PBLA23 START 26.1
HIERARCH ESO ISS PBLA23 END 26.5
HIERARCH ESO ISS PBL24 START 9.478
HIERARCH ESO ISS PBL24 END 9.516
HIERARCH ESO ISS PBLA24 START 26.061
HIERARCH ESO ISS PBLA24 END 26.42
HIERARCH ESO ISS PBL34 START 18.975
HIERARCH ESO ISS PBL34 END 19.051
HIERARCH ESO ISS PBLA34 START 206.136
HIERARCH ESO ISS PBLA34 END 206.494
HIERARCH ESO ISS AMBI TAU0 START 0.006296
HIERARCH ESO ISS AMBI TAU0 END 0.006292
HIERARCH ESO ISS AMBI TEMP 11.46
HIERARCH ESO ISS AMBI FWHM START 0.55
HIERARCH ESO ISS AMBI FWHM END 0.56