Exposure
ID
GRAVI.2023-12-26T05:58:44.909_1
Header ID
GRAVI.2023-12-26T05:58:44.909
Date updated
2023-12-26 06:15:32 UTC+0000
Release date
2024-12-26 06:15:32 UTC+0000
UTC Start
2023-12-26 05:58:44.909
UTC End
2023-12-26 06:05:24.909
MJD Start
60304.24913089
MJD End
60304.2537605196
Exposure time (s)
400.0
Validation level
1
Tau 0: Coherence time (s)
0.0085915
Ambient temperature (°C)
17.38
Seeing (arcsec)
0.845
Observation
ID
58062
Category
science
Program ID
112.25RU.001
Program Title
IS THE FIRST T DWARF COMPANION A BROWN DWARF BINARY?
Program Type
Normal
PI / COI
XUAN/ WANG/ LACOUR/ RUFFIO/ ZHANG/ BRANDNER/ MAWET/ RICKMAN
Target
ID
42999
Name
HD_42581_B
RA
92.643198
DEC
-21.86886
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
MEDIUM-COMBINED
Instrument sub-mode
DUAL
Stations
U1 U2 U3 U4
Projected baselines
Baseline Length start Length end Angle start Angle end
U1-U2 56.1190 56.0020 33.2000 33.7000
U1-U3 101.1510 100.8440 39.3000 39.8000
U1-U4 125.1430 124.1620 67.1730 67.6360
U2-U3 45.7420 45.5440 46.8000 47.2000
U2-U4 84.6240 83.7730 88.9200 89.5630
U3-U4 59.2490 58.7490 120.0960 121.0330
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 112.25RU.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60304.24913089
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 42581 B
HIERARCH ESO INS SOBJ NAME HD_42581_B
RA 92.643198
DEC -21.86886
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 56.119
HIERARCH ESO ISS PBL12 END 56.002
HIERARCH ESO ISS PBLA12 START 33.2
HIERARCH ESO ISS PBLA12 END 33.7
HIERARCH ESO ISS PBL13 START 101.151
HIERARCH ESO ISS PBL13 END 100.844
HIERARCH ESO ISS PBLA13 START 39.3
HIERARCH ESO ISS PBLA13 END 39.8
HIERARCH ESO ISS PBL14 START 125.143
HIERARCH ESO ISS PBL14 END 124.162
HIERARCH ESO ISS PBLA14 START 67.173
HIERARCH ESO ISS PBLA14 END 67.636
HIERARCH ESO ISS PBL23 START 45.742
HIERARCH ESO ISS PBL23 END 45.544
HIERARCH ESO ISS PBLA23 START 46.8
HIERARCH ESO ISS PBLA23 END 47.2
HIERARCH ESO ISS PBL24 START 84.624
HIERARCH ESO ISS PBL24 END 83.773
HIERARCH ESO ISS PBLA24 START 88.92
HIERARCH ESO ISS PBLA24 END 89.563
HIERARCH ESO ISS PBL34 START 59.249
HIERARCH ESO ISS PBL34 END 58.749
HIERARCH ESO ISS PBLA34 START 120.096
HIERARCH ESO ISS PBLA34 END 121.033
HIERARCH ESO ISS AMBI TAU0 START 0.007445
HIERARCH ESO ISS AMBI TAU0 END 0.009738
HIERARCH ESO ISS AMBI TEMP 17.38
HIERARCH ESO ISS AMBI FWHM START 0.92
HIERARCH ESO ISS AMBI FWHM END 0.77
HIERARCH ESO FT ROBJ NAME HD_42581
HIERARCH ESO FT ROBJ ALPHA 061034.615
HIERARCH ESO FT ROBJ DELTA -215152.656