Exposure
ID
GRAVI.2021-11-03T05:21:15.717_1
Header ID
GRAVI.2021-11-03T05:21:15.717
Date updated
2021-11-03 05:35:40 UTC+0000
Release date
2022-11-03 05:35:40 UTC+0000
UTC Start
2021-11-03 05:21:15.717
UTC End
2021-11-03 05:22:51.717
MJD Start
59521.22309858
MJD End
59521.2242096911
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.008665
Ambient temperature (°C)
11.71
Seeing (arcsec)
0.345
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 25.2990 25.2980 136.7000 136.6000
A0-D0 22.7470 23.0480 73.1000 73.2000
A0-C1 21.3390 21.4300 118.1900 117.9520
B2-D0 25.4190 25.4750 10.0000 10.6000
B2-C1 8.4700 8.4890 9.9630 10.5570
D0-C1 16.9490 16.9870 190.0380 190.6330
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 59521.22309858
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 25.299
HIERARCH ESO ISS PBL12 END 25.298
HIERARCH ESO ISS PBLA12 START 136.7
HIERARCH ESO ISS PBLA12 END 136.6
HIERARCH ESO ISS PBL13 START 22.747
HIERARCH ESO ISS PBL13 END 23.048
HIERARCH ESO ISS PBLA13 START 73.1
HIERARCH ESO ISS PBLA13 END 73.2
HIERARCH ESO ISS PBL14 START 21.339
HIERARCH ESO ISS PBL14 END 21.43
HIERARCH ESO ISS PBLA14 START 118.19
HIERARCH ESO ISS PBLA14 END 117.952
HIERARCH ESO ISS PBL23 START 25.419
HIERARCH ESO ISS PBL23 END 25.475
HIERARCH ESO ISS PBLA23 START 10.0
HIERARCH ESO ISS PBLA23 END 10.6
HIERARCH ESO ISS PBL24 START 8.47
HIERARCH ESO ISS PBL24 END 8.489
HIERARCH ESO ISS PBLA24 START 9.963
HIERARCH ESO ISS PBLA24 END 10.557
HIERARCH ESO ISS PBL34 START 16.949
HIERARCH ESO ISS PBL34 END 16.987
HIERARCH ESO ISS PBLA34 START 190.038
HIERARCH ESO ISS PBLA34 END 190.633
HIERARCH ESO ISS AMBI TAU0 START 0.008474
HIERARCH ESO ISS AMBI TAU0 END 0.008856
HIERARCH ESO ISS AMBI TEMP 11.71
HIERARCH ESO ISS AMBI FWHM START 0.34
HIERARCH ESO ISS AMBI FWHM END 0.35