Exposure
ID
GRAVI.2021-11-03T05:08:39.685_1
Header ID
GRAVI.2021-11-03T05:08:39.685
Date updated
2021-11-03 05:25:49 UTC+0000
Release date
2022-11-03 05:25:49 UTC+0000
UTC Start
2021-11-03 05:08:39.685
UTC End
2021-11-03 05:10:15.685
MJD Start
59521.21434821
MJD End
59521.2154593211
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.00754
Ambient temperature (°C)
11.71
Seeing (arcsec)
0.42
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 25.2800 25.2880 137.2000 137.1000
A0-D0 21.5390 21.8540 72.5000 72.7000
A0-C1 20.9530 21.0560 119.1670 118.9070
B2-D0 25.2290 25.2730 7.7000 8.3000
B2-C1 8.4070 8.4220 7.6060 8.2150
D0-C1 16.8220 16.8510 187.6780 188.2890
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 59521.21434821
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 25.28
HIERARCH ESO ISS PBL12 END 25.288
HIERARCH ESO ISS PBLA12 START 137.2
HIERARCH ESO ISS PBLA12 END 137.1
HIERARCH ESO ISS PBL13 START 21.539
HIERARCH ESO ISS PBL13 END 21.854
HIERARCH ESO ISS PBLA13 START 72.5
HIERARCH ESO ISS PBLA13 END 72.7
HIERARCH ESO ISS PBL14 START 20.953
HIERARCH ESO ISS PBL14 END 21.056
HIERARCH ESO ISS PBLA14 START 119.167
HIERARCH ESO ISS PBLA14 END 118.907
HIERARCH ESO ISS PBL23 START 25.229
HIERARCH ESO ISS PBL23 END 25.273
HIERARCH ESO ISS PBLA23 START 7.7
HIERARCH ESO ISS PBLA23 END 8.3
HIERARCH ESO ISS PBL24 START 8.407
HIERARCH ESO ISS PBL24 END 8.422
HIERARCH ESO ISS PBLA24 START 7.606
HIERARCH ESO ISS PBLA24 END 8.215
HIERARCH ESO ISS PBL34 START 16.822
HIERARCH ESO ISS PBL34 END 16.851
HIERARCH ESO ISS PBLA34 START 187.678
HIERARCH ESO ISS PBLA34 END 188.289
HIERARCH ESO ISS AMBI TAU0 START 0.007297
HIERARCH ESO ISS AMBI TAU0 END 0.007783
HIERARCH ESO ISS AMBI TEMP 11.71
HIERARCH ESO ISS AMBI FWHM START 0.42
HIERARCH ESO ISS AMBI FWHM END 0.42