Exposure
ID
GRAVI.2024-03-28T01:39:56.853_1
Header ID
GRAVI.2024-03-28T01:39:56.853
Date updated
2024-03-28 02:00:29 UTC+0000
Release date
2025-03-28 02:00:29 UTC+0000
UTC Start
2024-03-28 01:39:56.853
UTC End
2024-03-28 01:46:36.853
MJD Start
60397.06940802
MJD End
60397.0740376496
Exposure time (s)
400.0
Validation level
1
Tau 0: Coherence time (s)
0.0078065
Ambient temperature (°C)
13.25
Seeing (arcsec)
0.805
Observation
ID
58851
Category
science
Program ID
113.26K8.004
Program Title
DO TERTIARY COMPANIONS AFFECT THE FORMATION AND EVOLUTION OF MASSIVE OVERCONTACT BINARY SYSTEMS?
Program Type
Normal
PI / COI
ABDUL-MASIH / FROST / DE MINK / TOONEN / MAHY
Target
ID
43571
Name
BFCen
RA
174.075151
DEC
-61.46688
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
MEDIUM-COMBINED
Instrument sub-mode
SINGLE
Stations
U1 U2 U3 U4
Projected baselines
Baseline Length start Length end Angle start Angle end
U1-U2 50.3840 50.3160 10.1000 11.2000
U1-U3 94.1230 93.9590 15.7000 16.9000
U1-U4 129.7550 129.6530 37.6080 39.0750
U2-U3 44.2570 44.1750 22.1000 23.4000
U2-U4 88.1910 88.3570 52.9040 54.5080
U3-U4 55.0420 55.4520 77.2000 78.8150
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 113.26K8.004
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60397.06940802
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V BF Cen
HIERARCH ESO INS SOBJ NAME BFCen
RA 174.075151
DEC -61.46688
HIERARCH ESO INS SPEC RES MEDIUM
HIERARCH ESO INS POLA MODE COMBINED
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 U1
HIERARCH ESO ISS CONF STATION2 U2
HIERARCH ESO ISS CONF STATION3 U3
HIERARCH ESO ISS CONF STATION4 U4
EXPTIME 414.0
HIERARCH ESO DET2 SEQ1 DIT 100.0
HIERARCH ESO DET2 NDIT 4
HIERARCH ESO ISS PBL12 START 50.384
HIERARCH ESO ISS PBL12 END 50.316
HIERARCH ESO ISS PBLA12 START 10.1
HIERARCH ESO ISS PBLA12 END 11.2
HIERARCH ESO ISS PBL13 START 94.123
HIERARCH ESO ISS PBL13 END 93.959
HIERARCH ESO ISS PBLA13 START 15.7
HIERARCH ESO ISS PBLA13 END 16.9
HIERARCH ESO ISS PBL14 START 129.755
HIERARCH ESO ISS PBL14 END 129.653
HIERARCH ESO ISS PBLA14 START 37.608
HIERARCH ESO ISS PBLA14 END 39.075
HIERARCH ESO ISS PBL23 START 44.257
HIERARCH ESO ISS PBL23 END 44.175
HIERARCH ESO ISS PBLA23 START 22.1
HIERARCH ESO ISS PBLA23 END 23.4
HIERARCH ESO ISS PBL24 START 88.191
HIERARCH ESO ISS PBL24 END 88.357
HIERARCH ESO ISS PBLA24 START 52.904
HIERARCH ESO ISS PBLA24 END 54.508
HIERARCH ESO ISS PBL34 START 55.042
HIERARCH ESO ISS PBL34 END 55.452
HIERARCH ESO ISS PBLA34 START 77.2
HIERARCH ESO ISS PBLA34 END 78.815
HIERARCH ESO ISS AMBI TAU0 START 0.008456
HIERARCH ESO ISS AMBI TAU0 END 0.007157
HIERARCH ESO ISS AMBI TEMP 13.25
HIERARCH ESO ISS AMBI FWHM START 0.73
HIERARCH ESO ISS AMBI FWHM END 0.88