Exposure
ID
GRAVI.2023-08-25T04:06:36.528_1
Header ID
GRAVI.2023-08-25T04:06:36.528
Date updated
2023-08-25 04:15:45 UTC+0000
Release date
2024-08-25 04:15:45 UTC+0000
UTC Start
2023-08-25 04:06:36.528
UTC End
2023-08-25 04:09:16.528
MJD Start
60181.17125611
MJD End
60181.173107961855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0053384999999999995
Ambient temperature (°C)
13.9
Seeing (arcsec)
0.395
Observation
ID
56621
Category
science
Program ID
111.24TN.001
Program Title
SUBDWARF COMPANIONS AND THE ORIGIN OF BE STARS: TOWARDS THE FIRST SET OF FUNDAMENTAL PARAMETERS
Program Type
Normal
PI / COI
KLEMENT/ RIVINIUS/ BAADE/ MÉRAND
Target
ID
41952
Name
alf_Ara
RA
262.956644
DEC
-49.8765
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 K0
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 87.4340 87.3790 163.4000 164.1000
A0-J2 109.1990 108.8840 146.5000 147.3000
A0-K0 89.2830 88.6540 124.1600 125.0050
G1-J2 36.0470 35.6740 101.6000 102.3000
G1-K0 59.3440 58.8740 55.4660 55.7200
J2-K0 43.0940 43.0350 18.3630 18.6910
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 111.24TN.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60181.17125611
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME alf Ara
HIERARCH ESO INS SOBJ NAME alf_Ara
RA 262.956644
DEC -49.8765
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE COMBINED
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 A0
HIERARCH ESO ISS CONF STATION2 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 K0
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 87.434
HIERARCH ESO ISS PBL12 END 87.379
HIERARCH ESO ISS PBLA12 START 163.4
HIERARCH ESO ISS PBLA12 END 164.1
HIERARCH ESO ISS PBL13 START 109.199
HIERARCH ESO ISS PBL13 END 108.884
HIERARCH ESO ISS PBLA13 START 146.5
HIERARCH ESO ISS PBLA13 END 147.3
HIERARCH ESO ISS PBL14 START 89.283
HIERARCH ESO ISS PBL14 END 88.654
HIERARCH ESO ISS PBLA14 START 124.16
HIERARCH ESO ISS PBLA14 END 125.005
HIERARCH ESO ISS PBL23 START 36.047
HIERARCH ESO ISS PBL23 END 35.674
HIERARCH ESO ISS PBLA23 START 101.6
HIERARCH ESO ISS PBLA23 END 102.3
HIERARCH ESO ISS PBL24 START 59.344
HIERARCH ESO ISS PBL24 END 58.874
HIERARCH ESO ISS PBLA24 START 55.466
HIERARCH ESO ISS PBLA24 END 55.72
HIERARCH ESO ISS PBL34 START 43.094
HIERARCH ESO ISS PBL34 END 43.035
HIERARCH ESO ISS PBLA34 START 18.363
HIERARCH ESO ISS PBLA34 END 18.691
HIERARCH ESO ISS AMBI TAU0 START 0.005161
HIERARCH ESO ISS AMBI TAU0 END 0.005516
HIERARCH ESO ISS AMBI TEMP 13.9
HIERARCH ESO ISS AMBI FWHM START 0.38
HIERARCH ESO ISS AMBI FWHM END 0.41