Exposure
ID
GRAVI.2021-11-03T06:37:39.910_1
Header ID
GRAVI.2021-11-03T06:37:39.910
Date updated
2021-11-03 06:51:23 UTC+0000
Release date
2022-11-03 06:51:22 UTC+0000
UTC Start
2021-11-03 06:37:39.910
UTC End
2021-11-03 06:39:15.910
MJD Start
59521.27615636
MJD End
59521.2772674711
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.007623
Ambient temperature (°C)
11.81
Seeing (arcsec)
0.49
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 24.6400 24.5830 135.8000 135.9000
A0-D0 28.6510 28.8400 74.4000 74.4000
A0-C1 22.6050 22.6150 114.0790 113.9610
B2-D0 27.4140 27.5210 22.4000 22.8000
B2-C1 9.1320 9.1680 22.3050 22.7340
D0-C1 18.2820 18.3530 202.3830 202.8110
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 59521.27615636
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 24.64
HIERARCH ESO ISS PBL12 END 24.583
HIERARCH ESO ISS PBLA12 START 135.8
HIERARCH ESO ISS PBLA12 END 135.9
HIERARCH ESO ISS PBL13 START 28.651
HIERARCH ESO ISS PBL13 END 28.84
HIERARCH ESO ISS PBLA13 START 74.4
HIERARCH ESO ISS PBLA13 END 74.4
HIERARCH ESO ISS PBL14 START 22.605
HIERARCH ESO ISS PBL14 END 22.615
HIERARCH ESO ISS PBLA14 START 114.079
HIERARCH ESO ISS PBLA14 END 113.961
HIERARCH ESO ISS PBL23 START 27.414
HIERARCH ESO ISS PBL23 END 27.521
HIERARCH ESO ISS PBLA23 START 22.4
HIERARCH ESO ISS PBLA23 END 22.8
HIERARCH ESO ISS PBL24 START 9.132
HIERARCH ESO ISS PBL24 END 9.168
HIERARCH ESO ISS PBLA24 START 22.305
HIERARCH ESO ISS PBLA24 END 22.734
HIERARCH ESO ISS PBL34 START 18.282
HIERARCH ESO ISS PBL34 END 18.353
HIERARCH ESO ISS PBLA34 START 202.383
HIERARCH ESO ISS PBLA34 END 202.811
HIERARCH ESO ISS AMBI TAU0 START 0.007623
HIERARCH ESO ISS AMBI TAU0 END 0.007623
HIERARCH ESO ISS AMBI TEMP 11.81
HIERARCH ESO ISS AMBI FWHM START 0.49
HIERARCH ESO ISS AMBI FWHM END 0.49