Exposure
ID
GRAVI.2021-11-02T07:22:52.241_1
Header ID
GRAVI.2021-11-02T07:22:52.241
Date updated
2021-11-02 07:36:18 UTC+0000
Release date
2022-11-02 07:36:18 UTC+0000
UTC Start
2021-11-02 07:22:52.241
UTC End
2021-11-02 07:24:28.241
MJD Start
59520.30754909
MJD End
59520.3086602011
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.002402
Ambient temperature (°C)
10.66
Seeing (arcsec)
1.92
Observation
ID
48713
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
36483
Name
Betelgeuse
RA
88.790832
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 23.7400 23.6560 136.7000 136.8000
A0-D0 30.6730 30.7930 74.2000 74.2000
A0-C1 22.4520 22.4140 112.9100 112.8470
B2-D0 28.8440 28.9590 27.3000 27.6000
B2-C1 9.6080 9.6460 27.2590 27.5920
D0-C1 19.2360 19.3130 207.3320 207.6650
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 59520.30754909
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME Betelgeuse
HIERARCH ESO INS SOBJ NAME Betelgeuse
RA 88.790832
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 23.74
HIERARCH ESO ISS PBL12 END 23.656
HIERARCH ESO ISS PBLA12 START 136.7
HIERARCH ESO ISS PBLA12 END 136.8
HIERARCH ESO ISS PBL13 START 30.673
HIERARCH ESO ISS PBL13 END 30.793
HIERARCH ESO ISS PBLA13 START 74.2
HIERARCH ESO ISS PBLA13 END 74.2
HIERARCH ESO ISS PBL14 START 22.452
HIERARCH ESO ISS PBL14 END 22.414
HIERARCH ESO ISS PBLA14 START 112.91
HIERARCH ESO ISS PBLA14 END 112.847
HIERARCH ESO ISS PBL23 START 28.844
HIERARCH ESO ISS PBL23 END 28.959
HIERARCH ESO ISS PBLA23 START 27.3
HIERARCH ESO ISS PBLA23 END 27.6
HIERARCH ESO ISS PBL24 START 9.608
HIERARCH ESO ISS PBL24 END 9.646
HIERARCH ESO ISS PBLA24 START 27.259
HIERARCH ESO ISS PBLA24 END 27.592
HIERARCH ESO ISS PBL34 START 19.236
HIERARCH ESO ISS PBL34 END 19.313
HIERARCH ESO ISS PBLA34 START 207.332
HIERARCH ESO ISS PBLA34 END 207.665
HIERARCH ESO ISS AMBI TAU0 START 0.002402
HIERARCH ESO ISS AMBI TAU0 END 0.002402
HIERARCH ESO ISS AMBI TEMP 10.66
HIERARCH ESO ISS AMBI FWHM START 1.92
HIERARCH ESO ISS AMBI FWHM END 1.92