Exposure
ID
GRAVI.2023-12-26T05:51:29.891_1
Header ID
GRAVI.2023-12-26T05:51:29.891
Date updated
2023-12-26 06:05:36 UTC+0000
Release date
2024-12-26 06:05:36 UTC+0000
UTC Start
2023-12-26 05:51:29.891
UTC End
2023-12-26 05:58:09.891
MJD Start
60304.24409596
MJD End
60304.2487255896
Exposure time (s)
400.0
Validation level
1
Tau 0: Coherence time (s)
0.007445
Ambient temperature (°C)
17.38
Seeing (arcsec)
1.055
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 56.2250 56.1240 32.7000 33.2000
U1-U3 101.4350 101.1650 38.8000 39.3000
U1-U4 126.0770 125.1880 66.6730 67.1510
U2-U3 45.9270 45.7510 46.3000 46.8000
U2-U4 85.4430 84.6630 88.2520 88.8890
U3-U4 59.7390 59.2720 119.1460 120.0520
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 60304.24409596
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 56.225
HIERARCH ESO ISS PBL12 END 56.124
HIERARCH ESO ISS PBLA12 START 32.7
HIERARCH ESO ISS PBLA12 END 33.2
HIERARCH ESO ISS PBL13 START 101.435
HIERARCH ESO ISS PBL13 END 101.165
HIERARCH ESO ISS PBLA13 START 38.8
HIERARCH ESO ISS PBLA13 END 39.3
HIERARCH ESO ISS PBL14 START 126.077
HIERARCH ESO ISS PBL14 END 125.188
HIERARCH ESO ISS PBLA14 START 66.673
HIERARCH ESO ISS PBLA14 END 67.151
HIERARCH ESO ISS PBL23 START 45.927
HIERARCH ESO ISS PBL23 END 45.751
HIERARCH ESO ISS PBLA23 START 46.3
HIERARCH ESO ISS PBLA23 END 46.8
HIERARCH ESO ISS PBL24 START 85.443
HIERARCH ESO ISS PBL24 END 84.663
HIERARCH ESO ISS PBLA24 START 88.252
HIERARCH ESO ISS PBLA24 END 88.889
HIERARCH ESO ISS PBL34 START 59.739
HIERARCH ESO ISS PBL34 END 59.272
HIERARCH ESO ISS PBLA34 START 119.146
HIERARCH ESO ISS PBLA34 END 120.052
HIERARCH ESO ISS AMBI TAU0 START 0.007445
HIERARCH ESO ISS AMBI TAU0 END 0.007445
HIERARCH ESO ISS AMBI TEMP 17.38
HIERARCH ESO ISS AMBI FWHM START 1.19
HIERARCH ESO ISS AMBI FWHM END 0.92
HIERARCH ESO FT ROBJ NAME HD_42581
HIERARCH ESO FT ROBJ ALPHA 061034.615
HIERARCH ESO FT ROBJ DELTA -215152.656