Exposure
ID
GRAVI.2021-09-01T08:14:13.972_1
Header ID
GRAVI.2021-09-01T08:14:13.972
Date updated
2021-09-01 08:30:58 UTC+0000
Release date
2022-09-01 08:30:58 UTC+0000
UTC Start
2021-09-01 08:14:13.972
UTC End
2021-09-01 08:15:49.972
MJD Start
59458.34321727
MJD End
59458.3443283811
Exposure time (s)
96.0
Validation level
1
Tau 0: Coherence time (s)
0.003556
Ambient temperature (°C)
12.5
Seeing (arcsec)
0.75
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 24.7100 24.7580 140.7000 140.5000
A0-D0 14.9210 15.2850 66.9000 67.4000
A0-C1 18.4840 18.6320 125.7440 125.3140
B2-D0 25.0550 25.0310 355.6000 356.2000
B2-C1 8.3500 8.3430 355.5360 356.1640
D0-C1 16.7040 16.6890 175.5890 176.2180
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 59458.34321727
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 24.71
HIERARCH ESO ISS PBL12 END 24.758
HIERARCH ESO ISS PBLA12 START 140.7
HIERARCH ESO ISS PBLA12 END 140.5
HIERARCH ESO ISS PBL13 START 14.921
HIERARCH ESO ISS PBL13 END 15.285
HIERARCH ESO ISS PBLA13 START 66.9
HIERARCH ESO ISS PBLA13 END 67.4
HIERARCH ESO ISS PBL14 START 18.484
HIERARCH ESO ISS PBL14 END 18.632
HIERARCH ESO ISS PBLA14 START 125.744
HIERARCH ESO ISS PBLA14 END 125.314
HIERARCH ESO ISS PBL23 START 25.055
HIERARCH ESO ISS PBL23 END 25.031
HIERARCH ESO ISS PBLA23 START 355.6
HIERARCH ESO ISS PBLA23 END 356.2
HIERARCH ESO ISS PBL24 START 8.35
HIERARCH ESO ISS PBL24 END 8.343
HIERARCH ESO ISS PBLA24 START 355.536
HIERARCH ESO ISS PBLA24 END 356.164
HIERARCH ESO ISS PBL34 START 16.704
HIERARCH ESO ISS PBL34 END 16.689
HIERARCH ESO ISS PBLA34 START 175.589
HIERARCH ESO ISS PBLA34 END 176.218
HIERARCH ESO ISS AMBI TAU0 START 0.003732
HIERARCH ESO ISS AMBI TAU0 END 0.00338
HIERARCH ESO ISS AMBI TEMP 12.5
HIERARCH ESO ISS AMBI FWHM START 0.75
HIERARCH ESO ISS AMBI FWHM END 0.75