Exposure
ID
GRAVI.2023-08-18T02:40:40.733_1
Header ID
GRAVI.2023-08-18T02:40:40.733
Date updated
2023-08-18 02:50:22 UTC+0000
Release date
2024-08-18 02:50:22 UTC+0000
UTC Start
2023-08-18 02:40:40.733
UTC End
2023-08-18 02:43:20.733
MJD Start
60174.11158256
MJD End
60174.113434411855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0018955
Ambient temperature (°C)
10.87
Seeing (arcsec)
1.46
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 90.0000 89.9460 138.5000 139.1000
A0-J2 122.3020 121.9950 118.6000 119.2000
A0-K0 112.2520 111.7420 97.2870 97.8920
G1-J2 48.5290 48.2640 79.5000 80.0000
G1-K0 74.1270 73.8240 44.2070 44.5380
J2-K0 44.4780 44.4630 5.1170 5.4770
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 60174.11158256
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 90.0
HIERARCH ESO ISS PBL12 END 89.946
HIERARCH ESO ISS PBLA12 START 138.5
HIERARCH ESO ISS PBLA12 END 139.1
HIERARCH ESO ISS PBL13 START 122.302
HIERARCH ESO ISS PBL13 END 121.995
HIERARCH ESO ISS PBLA13 START 118.6
HIERARCH ESO ISS PBLA13 END 119.2
HIERARCH ESO ISS PBL14 START 112.252
HIERARCH ESO ISS PBL14 END 111.742
HIERARCH ESO ISS PBLA14 START 97.287
HIERARCH ESO ISS PBLA14 END 97.892
HIERARCH ESO ISS PBL23 START 48.529
HIERARCH ESO ISS PBL23 END 48.264
HIERARCH ESO ISS PBLA23 START 79.5
HIERARCH ESO ISS PBLA23 END 80.0
HIERARCH ESO ISS PBL24 START 74.127
HIERARCH ESO ISS PBL24 END 73.824
HIERARCH ESO ISS PBLA24 START 44.207
HIERARCH ESO ISS PBLA24 END 44.538
HIERARCH ESO ISS PBL34 START 44.478
HIERARCH ESO ISS PBL34 END 44.463
HIERARCH ESO ISS PBLA34 START 5.117
HIERARCH ESO ISS PBLA34 END 5.477
HIERARCH ESO ISS AMBI TAU0 START 0.002056
HIERARCH ESO ISS AMBI TAU0 END 0.001735
HIERARCH ESO ISS AMBI TEMP 10.87
HIERARCH ESO ISS AMBI FWHM START 1.55
HIERARCH ESO ISS AMBI FWHM END 1.37