Exposure
ID
GRAVI.2021-09-01T08:21:28.990_1
Header ID
GRAVI.2021-09-01T08:21:28.990
Date updated
2021-09-01 08:36:14 UTC+0000
Release date
2022-09-01 08:36:13 UTC+0000
UTC Start
2021-09-01 08:21:28.990
UTC End
2021-09-01 08:23:04.990
MJD Start
59458.3482522
MJD End
59458.3493633111
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.0034385
Ambient temperature (°C)
12.48
Seeing (arcsec)
0.615
Observation
ID
48061
Category
science
Program ID
104.20UZ.001
Program Title
BETELGEUSE IS BECOMING FAINTER: THE HIGH ANGULAR RESOLUTION RESPONSE
Program Type
ToO
PI / COI
MONTARGES/ CANTALLOUBE/ HUBY/ CANNON/ KERVELLA/ LAGADEC/ DUPREE/ DECIN/ LEBRE/ PERRIN/ LOPEZ ARISTE
Target
ID
36067
Name
Betelgeuse
RA
88.790831
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 24.8140 24.8570 140.2000 140.0000
A0-D0 15.7360 16.0950 67.9000 68.3000
A0-C1 18.8130 18.9560 124.7960 124.3930
B2-D0 25.0080 24.9920 357.0000 357.6000
B2-C1 8.3350 8.3300 356.9460 357.5740
D0-C1 16.6730 16.6630 177.0020 177.6310
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 104.20UZ.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 59458.3482522
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME Betelgeuse
HIERARCH ESO INS SOBJ NAME Betelgeuse
RA 88.790831
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 24.814
HIERARCH ESO ISS PBL12 END 24.857
HIERARCH ESO ISS PBLA12 START 140.2
HIERARCH ESO ISS PBLA12 END 140.0
HIERARCH ESO ISS PBL13 START 15.736
HIERARCH ESO ISS PBL13 END 16.095
HIERARCH ESO ISS PBLA13 START 67.9
HIERARCH ESO ISS PBLA13 END 68.3
HIERARCH ESO ISS PBL14 START 18.813
HIERARCH ESO ISS PBL14 END 18.956
HIERARCH ESO ISS PBLA14 START 124.796
HIERARCH ESO ISS PBLA14 END 124.393
HIERARCH ESO ISS PBL23 START 25.008
HIERARCH ESO ISS PBL23 END 24.992
HIERARCH ESO ISS PBLA23 START 357.0
HIERARCH ESO ISS PBLA23 END 357.6
HIERARCH ESO ISS PBL24 START 8.335
HIERARCH ESO ISS PBL24 END 8.33
HIERARCH ESO ISS PBLA24 START 356.946
HIERARCH ESO ISS PBLA24 END 357.574
HIERARCH ESO ISS PBL34 START 16.673
HIERARCH ESO ISS PBL34 END 16.663
HIERARCH ESO ISS PBLA34 START 177.002
HIERARCH ESO ISS PBLA34 END 177.631
HIERARCH ESO ISS AMBI TAU0 START 0.00329
HIERARCH ESO ISS AMBI TAU0 END 0.003587
HIERARCH ESO ISS AMBI TEMP 12.48
HIERARCH ESO ISS AMBI FWHM START 0.61
HIERARCH ESO ISS AMBI FWHM END 0.62