Exposure
ID
GRAVI.2021-11-03T06:22:33.872_1
Header ID
GRAVI.2021-11-03T06:22:33.872
Date updated
2021-11-03 06:36:24 UTC+0000
Release date
2022-11-03 06:36:24 UTC+0000
UTC Start
2021-11-03 06:22:33.872
UTC End
2021-11-03 06:24:09.872
MJD Start
59521.26566981
MJD End
59521.2667809211
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.007311
Ambient temperature (°C)
11.7
Seeing (arcsec)
0.48
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 24.8760 24.8290 135.7000 135.7000
A0-D0 27.6960 27.9100 74.4000 74.4000
A0-C1 22.5100 22.5370 114.6730 114.5370
B2-D0 26.9310 27.0320 20.2000 20.7000
B2-C1 8.9720 9.0050 20.1750 20.6450
D0-C1 17.9590 18.0270 200.2540 200.7240
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 59521.26566981
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 24.876
HIERARCH ESO ISS PBL12 END 24.829
HIERARCH ESO ISS PBLA12 START 135.7
HIERARCH ESO ISS PBLA12 END 135.7
HIERARCH ESO ISS PBL13 START 27.696
HIERARCH ESO ISS PBL13 END 27.91
HIERARCH ESO ISS PBLA13 START 74.4
HIERARCH ESO ISS PBLA13 END 74.4
HIERARCH ESO ISS PBL14 START 22.51
HIERARCH ESO ISS PBL14 END 22.537
HIERARCH ESO ISS PBLA14 START 114.673
HIERARCH ESO ISS PBLA14 END 114.537
HIERARCH ESO ISS PBL23 START 26.931
HIERARCH ESO ISS PBL23 END 27.032
HIERARCH ESO ISS PBLA23 START 20.2
HIERARCH ESO ISS PBLA23 END 20.7
HIERARCH ESO ISS PBL24 START 8.972
HIERARCH ESO ISS PBL24 END 9.005
HIERARCH ESO ISS PBLA24 START 20.175
HIERARCH ESO ISS PBLA24 END 20.645
HIERARCH ESO ISS PBL34 START 17.959
HIERARCH ESO ISS PBL34 END 18.027
HIERARCH ESO ISS PBLA34 START 200.254
HIERARCH ESO ISS PBLA34 END 200.724
HIERARCH ESO ISS AMBI TAU0 START 0.007869
HIERARCH ESO ISS AMBI TAU0 END 0.006753
HIERARCH ESO ISS AMBI TEMP 11.7
HIERARCH ESO ISS AMBI FWHM START 0.48
HIERARCH ESO ISS AMBI FWHM END 0.48