Exposure
ID
GRAVI.2021-11-27T05:18:40.685_1
Header ID
GRAVI.2021-11-27T05:18:40.685
Date updated
2021-11-27 05:36:57 UTC+0000
Release date
2022-11-27 05:36:57 UTC+0000
UTC Start
2021-11-27 05:18:40.685
UTC End
2021-11-27 05:20:16.685
MJD Start
59545.22130422
MJD End
59545.2224153311
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.0057795
Ambient temperature (°C)
11.5
Seeing (arcsec)
0.54
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 24.3470 24.2790 136.0000 136.1000
A0-D0 29.5090 29.6720 74.4000 74.4000
A0-C1 22.6190 22.6120 113.5670 113.4720
B2-D0 27.9350 28.0460 24.4000 24.7000
B2-C1 9.3050 9.3420 24.3030 24.6970
D0-C1 18.6290 18.7030 204.3790 204.7730
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 59545.22130422
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 24.347
HIERARCH ESO ISS PBL12 END 24.279
HIERARCH ESO ISS PBLA12 START 136.0
HIERARCH ESO ISS PBLA12 END 136.1
HIERARCH ESO ISS PBL13 START 29.509
HIERARCH ESO ISS PBL13 END 29.672
HIERARCH ESO ISS PBLA13 START 74.4
HIERARCH ESO ISS PBLA13 END 74.4
HIERARCH ESO ISS PBL14 START 22.619
HIERARCH ESO ISS PBL14 END 22.612
HIERARCH ESO ISS PBLA14 START 113.567
HIERARCH ESO ISS PBLA14 END 113.472
HIERARCH ESO ISS PBL23 START 27.935
HIERARCH ESO ISS PBL23 END 28.046
HIERARCH ESO ISS PBLA23 START 24.4
HIERARCH ESO ISS PBLA23 END 24.7
HIERARCH ESO ISS PBL24 START 9.305
HIERARCH ESO ISS PBL24 END 9.342
HIERARCH ESO ISS PBLA24 START 24.303
HIERARCH ESO ISS PBLA24 END 24.697
HIERARCH ESO ISS PBL34 START 18.629
HIERARCH ESO ISS PBL34 END 18.703
HIERARCH ESO ISS PBLA34 START 204.379
HIERARCH ESO ISS PBLA34 END 204.773
HIERARCH ESO ISS AMBI TAU0 START 0.006112
HIERARCH ESO ISS AMBI TAU0 END 0.005447
HIERARCH ESO ISS AMBI TEMP 11.5
HIERARCH ESO ISS AMBI FWHM START 0.55
HIERARCH ESO ISS AMBI FWHM END 0.53