Exposure
ID
GRAVI.2021-11-27T04:27:25.556_1
Header ID
GRAVI.2021-11-27T04:27:25.556
Date updated
2021-11-27 04:46:19 UTC+0000
Release date
2022-11-27 04:46:19 UTC+0000
UTC Start
2021-11-27 04:27:25.556
UTC End
2021-11-27 04:29:01.556
MJD Start
59545.18571245
MJD End
59545.1868235611
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.0051325
Ambient temperature (°C)
11.96
Seeing (arcsec)
0.605
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 25.1160 25.0850 135.9000 135.8000
A0-D0 26.2040 26.4480 74.2000 74.2000
A0-C1 22.2510 22.3000 115.6600 115.4950
B2-D0 26.3260 26.4150 17.0000 17.6000
B2-C1 8.7710 8.8000 16.9850 17.4990
D0-C1 17.5550 17.6140 197.0640 197.5780
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 59545.18571245
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 25.116
HIERARCH ESO ISS PBL12 END 25.085
HIERARCH ESO ISS PBLA12 START 135.9
HIERARCH ESO ISS PBLA12 END 135.8
HIERARCH ESO ISS PBL13 START 26.204
HIERARCH ESO ISS PBL13 END 26.448
HIERARCH ESO ISS PBLA13 START 74.2
HIERARCH ESO ISS PBLA13 END 74.2
HIERARCH ESO ISS PBL14 START 22.251
HIERARCH ESO ISS PBL14 END 22.3
HIERARCH ESO ISS PBLA14 START 115.66
HIERARCH ESO ISS PBLA14 END 115.495
HIERARCH ESO ISS PBL23 START 26.326
HIERARCH ESO ISS PBL23 END 26.415
HIERARCH ESO ISS PBLA23 START 17.0
HIERARCH ESO ISS PBLA23 END 17.6
HIERARCH ESO ISS PBL24 START 8.771
HIERARCH ESO ISS PBL24 END 8.8
HIERARCH ESO ISS PBLA24 START 16.985
HIERARCH ESO ISS PBLA24 END 17.499
HIERARCH ESO ISS PBL34 START 17.555
HIERARCH ESO ISS PBL34 END 17.614
HIERARCH ESO ISS PBLA34 START 197.064
HIERARCH ESO ISS PBLA34 END 197.578
HIERARCH ESO ISS AMBI TAU0 START 0.004858
HIERARCH ESO ISS AMBI TAU0 END 0.005407
HIERARCH ESO ISS AMBI TEMP 11.96
HIERARCH ESO ISS AMBI FWHM START 0.64
HIERARCH ESO ISS AMBI FWHM END 0.57