Exposure
ID
GRAVI.2021-11-27T05:29:25.712_1
Header ID
GRAVI.2021-11-27T05:29:25.712
Date updated
2021-11-27 05:46:37 UTC+0000
Release date
2022-11-27 05:46:37 UTC+0000
UTC Start
2021-11-27 05:29:25.712
UTC End
2021-11-27 05:31:01.712
MJD Start
59545.22876981
MJD End
59545.2298809211
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.006219
Ambient temperature (°C)
11.55
Seeing (arcsec)
0.59
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 24.1110 24.0360 136.3000 136.3000
A0-D0 30.0370 30.1820 74.4000 74.3000
A0-C1 22.5790 22.5590 113.2630 113.1820
B2-D0 28.3100 28.4230 25.6000 26.0000
B2-C1 9.4300 9.4680 25.5960 25.9650
D0-C1 18.8800 18.9550 205.6710 206.0390
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 59545.22876981
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 24.111
HIERARCH ESO ISS PBL12 END 24.036
HIERARCH ESO ISS PBLA12 START 136.3
HIERARCH ESO ISS PBLA12 END 136.3
HIERARCH ESO ISS PBL13 START 30.037
HIERARCH ESO ISS PBL13 END 30.182
HIERARCH ESO ISS PBLA13 START 74.4
HIERARCH ESO ISS PBLA13 END 74.3
HIERARCH ESO ISS PBL14 START 22.579
HIERARCH ESO ISS PBL14 END 22.559
HIERARCH ESO ISS PBLA14 START 113.263
HIERARCH ESO ISS PBLA14 END 113.182
HIERARCH ESO ISS PBL23 START 28.31
HIERARCH ESO ISS PBL23 END 28.423
HIERARCH ESO ISS PBLA23 START 25.6
HIERARCH ESO ISS PBLA23 END 26.0
HIERARCH ESO ISS PBL24 START 9.43
HIERARCH ESO ISS PBL24 END 9.468
HIERARCH ESO ISS PBLA24 START 25.596
HIERARCH ESO ISS PBLA24 END 25.965
HIERARCH ESO ISS PBL34 START 18.88
HIERARCH ESO ISS PBL34 END 18.955
HIERARCH ESO ISS PBLA34 START 205.671
HIERARCH ESO ISS PBLA34 END 206.039
HIERARCH ESO ISS AMBI TAU0 START 0.006157
HIERARCH ESO ISS AMBI TAU0 END 0.006281
HIERARCH ESO ISS AMBI TEMP 11.55
HIERARCH ESO ISS AMBI FWHM START 0.61
HIERARCH ESO ISS AMBI FWHM END 0.57