Exposure
ID
GRAVI.2021-11-27T06:33:49.874_1
Header ID
GRAVI.2021-11-27T06:33:49.874
Date updated
2021-11-27 06:51:59 UTC+0000
Release date
2022-11-27 06:51:59 UTC+0000
UTC Start
2021-11-27 06:33:49.874
UTC End
2021-11-27 06:35:25.874
MJD Start
59545.27349391
MJD End
59545.2746050211
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.0063265
Ambient temperature (°C)
11.28
Seeing (arcsec)
0.465
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 22.2460 22.1350 139.2000 139.5000
A0-D0 31.8910 31.9240 73.3000 73.2000
A0-C1 21.4690 21.3750 112.3840 112.3840
B2-D0 30.5670 30.6750 31.6000 31.8000
B2-C1 10.1810 10.2170 31.5500 31.7710
D0-C1 20.3860 20.4580 211.6150 211.8360
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 59545.27349391
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 22.246
HIERARCH ESO ISS PBL12 END 22.135
HIERARCH ESO ISS PBLA12 START 139.2
HIERARCH ESO ISS PBLA12 END 139.5
HIERARCH ESO ISS PBL13 START 31.891
HIERARCH ESO ISS PBL13 END 31.924
HIERARCH ESO ISS PBLA13 START 73.3
HIERARCH ESO ISS PBLA13 END 73.2
HIERARCH ESO ISS PBL14 START 21.469
HIERARCH ESO ISS PBL14 END 21.375
HIERARCH ESO ISS PBLA14 START 112.384
HIERARCH ESO ISS PBLA14 END 112.384
HIERARCH ESO ISS PBL23 START 30.567
HIERARCH ESO ISS PBL23 END 30.675
HIERARCH ESO ISS PBLA23 START 31.6
HIERARCH ESO ISS PBLA23 END 31.8
HIERARCH ESO ISS PBL24 START 10.181
HIERARCH ESO ISS PBL24 END 10.217
HIERARCH ESO ISS PBLA24 START 31.55
HIERARCH ESO ISS PBLA24 END 31.771
HIERARCH ESO ISS PBL34 START 20.386
HIERARCH ESO ISS PBL34 END 20.458
HIERARCH ESO ISS PBLA34 START 211.615
HIERARCH ESO ISS PBLA34 END 211.836
HIERARCH ESO ISS AMBI TAU0 START 0.005637
HIERARCH ESO ISS AMBI TAU0 END 0.007016
HIERARCH ESO ISS AMBI TEMP 11.28
HIERARCH ESO ISS AMBI FWHM START 0.52
HIERARCH ESO ISS AMBI FWHM END 0.41