Exposure
ID
GRAVI.2024-04-25T00:32:49.887_1
Header ID
GRAVI.2024-04-25T00:32:49.887
Date updated
2024-04-25 00:50:34 UTC+0000
Release date
2025-04-25 00:50:34 UTC+0000
UTC Start
2024-04-25 00:32:49.887
UTC End
2024-04-25 00:39:29.887
MJD Start
60425.02279962
MJD End
60425.0274292496
Exposure time (s)
400.0
Validation level
1
Tau 0: Coherence time (s)
0.008921
Ambient temperature (°C)
15.73
Seeing (arcsec)
0.695
Observation
ID
58940
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
43629
Name
BFCen
RA
174.075117
DEC
-61.46693
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 49.8340 49.7180 17.0000 18.1000
U1-U3 92.8810 92.6310 23.1000 24.2000
U1-U4 128.8700 128.6670 46.6560 48.0930
U2-U3 43.6450 43.5240 30.0000 31.2000
U2-U4 89.0590 89.1560 62.7380 64.2900
U3-U4 57.4370 57.7840 87.0190 88.5530
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 60425.02279962
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V BF Cen
HIERARCH ESO INS SOBJ NAME BFCen
RA 174.075117
DEC -61.46693
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 49.834
HIERARCH ESO ISS PBL12 END 49.718
HIERARCH ESO ISS PBLA12 START 17.0
HIERARCH ESO ISS PBLA12 END 18.1
HIERARCH ESO ISS PBL13 START 92.881
HIERARCH ESO ISS PBL13 END 92.631
HIERARCH ESO ISS PBLA13 START 23.1
HIERARCH ESO ISS PBLA13 END 24.2
HIERARCH ESO ISS PBL14 START 128.87
HIERARCH ESO ISS PBL14 END 128.667
HIERARCH ESO ISS PBLA14 START 46.656
HIERARCH ESO ISS PBLA14 END 48.093
HIERARCH ESO ISS PBL23 START 43.645
HIERARCH ESO ISS PBL23 END 43.524
HIERARCH ESO ISS PBLA23 START 30.0
HIERARCH ESO ISS PBLA23 END 31.2
HIERARCH ESO ISS PBL24 START 89.059
HIERARCH ESO ISS PBL24 END 89.156
HIERARCH ESO ISS PBLA24 START 62.738
HIERARCH ESO ISS PBLA24 END 64.29
HIERARCH ESO ISS PBL34 START 57.437
HIERARCH ESO ISS PBL34 END 57.784
HIERARCH ESO ISS PBLA34 START 87.019
HIERARCH ESO ISS PBLA34 END 88.553
HIERARCH ESO ISS AMBI TAU0 START 0.007855
HIERARCH ESO ISS AMBI TAU0 END 0.009987
HIERARCH ESO ISS AMBI TEMP 15.73
HIERARCH ESO ISS AMBI FWHM START 0.74
HIERARCH ESO ISS AMBI FWHM END 0.65