Exposure
ID
GRAVI.2021-11-27T06:24:58.852_1
Header ID
GRAVI.2021-11-27T06:24:58.852
Date updated
2021-11-27 06:41:29 UTC+0000
Release date
2022-11-27 06:41:28 UTC+0000
UTC Start
2021-11-27 06:24:58.852
UTC End
2021-11-27 06:26:34.852
MJD Start
59545.26734782
MJD End
59545.2684589311
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.0062285
Ambient temperature (°C)
11.2
Seeing (arcsec)
0.525
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 22.5440 22.4370 138.7000 138.9000
A0-D0 31.7700 31.8190 73.5000 73.4000
A0-C1 21.7090 21.6250 112.4080 112.3960
B2-D0 30.2670 30.3770 30.9000 31.2000
B2-C1 10.0810 10.1180 30.9030 31.1450
D0-C1 20.1850 20.2590 210.9700 211.2110
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 59545.26734782
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 22.544
HIERARCH ESO ISS PBL12 END 22.437
HIERARCH ESO ISS PBLA12 START 138.7
HIERARCH ESO ISS PBLA12 END 138.9
HIERARCH ESO ISS PBL13 START 31.77
HIERARCH ESO ISS PBL13 END 31.819
HIERARCH ESO ISS PBLA13 START 73.5
HIERARCH ESO ISS PBLA13 END 73.4
HIERARCH ESO ISS PBL14 START 21.709
HIERARCH ESO ISS PBL14 END 21.625
HIERARCH ESO ISS PBLA14 START 112.408
HIERARCH ESO ISS PBLA14 END 112.396
HIERARCH ESO ISS PBL23 START 30.267
HIERARCH ESO ISS PBL23 END 30.377
HIERARCH ESO ISS PBLA23 START 30.9
HIERARCH ESO ISS PBLA23 END 31.2
HIERARCH ESO ISS PBL24 START 10.081
HIERARCH ESO ISS PBL24 END 10.118
HIERARCH ESO ISS PBLA24 START 30.903
HIERARCH ESO ISS PBLA24 END 31.145
HIERARCH ESO ISS PBL34 START 20.185
HIERARCH ESO ISS PBL34 END 20.259
HIERARCH ESO ISS PBLA34 START 210.97
HIERARCH ESO ISS PBLA34 END 211.211
HIERARCH ESO ISS AMBI TAU0 START 0.005557
HIERARCH ESO ISS AMBI TAU0 END 0.0069
HIERARCH ESO ISS AMBI TEMP 11.2
HIERARCH ESO ISS AMBI FWHM START 0.56
HIERARCH ESO ISS AMBI FWHM END 0.49