Exposure
ID
GRAVI.2021-11-03T06:34:06.901_1
Header ID
GRAVI.2021-11-03T06:34:06.901
Date updated
2021-11-03 06:46:17 UTC+0000
Release date
2022-11-03 06:46:17 UTC+0000
UTC Start
2021-11-03 06:34:06.901
UTC End
2021-11-03 06:35:42.901
MJD Start
59521.27369098
MJD End
59521.2748020911
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.007248
Ambient temperature (°C)
11.67
Seeing (arcsec)
0.455
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 24.6990 24.6450 135.8000 135.8000
A0-D0 28.4380 28.6330 74.4000 74.4000
A0-C1 22.5900 22.6040 114.2100 114.0900
B2-D0 27.2980 27.4040 21.9000 22.3000
B2-C1 9.0940 9.1290 21.8220 22.2640
D0-C1 18.2040 18.2750 201.9000 202.3420
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 59521.27369098
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 24.699
HIERARCH ESO ISS PBL12 END 24.645
HIERARCH ESO ISS PBLA12 START 135.8
HIERARCH ESO ISS PBLA12 END 135.8
HIERARCH ESO ISS PBL13 START 28.438
HIERARCH ESO ISS PBL13 END 28.633
HIERARCH ESO ISS PBLA13 START 74.4
HIERARCH ESO ISS PBLA13 END 74.4
HIERARCH ESO ISS PBL14 START 22.59
HIERARCH ESO ISS PBL14 END 22.604
HIERARCH ESO ISS PBLA14 START 114.21
HIERARCH ESO ISS PBLA14 END 114.09
HIERARCH ESO ISS PBL23 START 27.298
HIERARCH ESO ISS PBL23 END 27.404
HIERARCH ESO ISS PBLA23 START 21.9
HIERARCH ESO ISS PBLA23 END 22.3
HIERARCH ESO ISS PBL24 START 9.094
HIERARCH ESO ISS PBL24 END 9.129
HIERARCH ESO ISS PBLA24 START 21.822
HIERARCH ESO ISS PBLA24 END 22.264
HIERARCH ESO ISS PBL34 START 18.204
HIERARCH ESO ISS PBL34 END 18.275
HIERARCH ESO ISS PBLA34 START 201.9
HIERARCH ESO ISS PBLA34 END 202.342
HIERARCH ESO ISS AMBI TAU0 START 0.006873
HIERARCH ESO ISS AMBI TAU0 END 0.007623
HIERARCH ESO ISS AMBI TEMP 11.67
HIERARCH ESO ISS AMBI FWHM START 0.42
HIERARCH ESO ISS AMBI FWHM END 0.49