Exposure
ID
GRAVI.2024-12-19T07:27:24.305_1
Header ID
GRAVI.2024-12-19T07:27:24.305
Date updated
2024-12-19 07:40:39 UTC+0000
Release date
2025-12-19 07:40:39 UTC+0000
UTC Start
2024-12-19 07:27:24.305
UTC End
2024-12-19 07:34:04.305
MJD Start
60663.31069797
MJD End
60663.31532759963
Exposure time (s)
400.0
Validation level
1
Tau 0: Coherence time (s)
0.0073045
Ambient temperature (°C)
13.52
Seeing (arcsec)
0.795
Observation
ID
62763
Category
science
Program ID
112.26Z1.001
Program Title
RESOLVING THE FIRST T DWARF COMPANION AS A TIGHT BROWN DWARF BINARY
Program Type
ToO
PI / COI
XUAN/ LACOUR/ WANG/ MAWET/ RICKMAN/ BRANDNER/ ZHANG/ MÉRAND/ WINTERHALDER/ SPEZZANO/ JANSON/ HINKLEY/ KRAL/ KAMMERER/ BALMER/ BOURDAROT/ RUFFIO/ OTTEN
Target
ID
46694
Name
HD_42581_B
RA
92.643199
DEC
-21.86936
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 54.4360 54.1720 36.7000 37.0000
U1-U3 96.9180 96.2750 42.5000 42.7000
U1-U4 112.7800 111.0250 70.9250 71.2590
U2-U3 43.1070 42.7180 49.8000 50.0000
U2-U4 74.3290 72.9210 95.2190 95.9670
U3-U4 53.7020 53.0160 130.0770 131.3520
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 112.26Z1.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60663.31069797
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 42581 B
HIERARCH ESO INS SOBJ NAME HD_42581_B
RA 92.643199
DEC -21.86936
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 54.436
HIERARCH ESO ISS PBL12 END 54.172
HIERARCH ESO ISS PBLA12 START 36.7
HIERARCH ESO ISS PBLA12 END 37.0
HIERARCH ESO ISS PBL13 START 96.918
HIERARCH ESO ISS PBL13 END 96.275
HIERARCH ESO ISS PBLA13 START 42.5
HIERARCH ESO ISS PBLA13 END 42.7
HIERARCH ESO ISS PBL14 START 112.78
HIERARCH ESO ISS PBL14 END 111.025
HIERARCH ESO ISS PBLA14 START 70.925
HIERARCH ESO ISS PBLA14 END 71.259
HIERARCH ESO ISS PBL23 START 43.107
HIERARCH ESO ISS PBL23 END 42.718
HIERARCH ESO ISS PBLA23 START 49.8
HIERARCH ESO ISS PBLA23 END 50.0
HIERARCH ESO ISS PBL24 START 74.329
HIERARCH ESO ISS PBL24 END 72.921
HIERARCH ESO ISS PBLA24 START 95.219
HIERARCH ESO ISS PBLA24 END 95.967
HIERARCH ESO ISS PBL34 START 53.702
HIERARCH ESO ISS PBL34 END 53.016
HIERARCH ESO ISS PBLA34 START 130.077
HIERARCH ESO ISS PBLA34 END 131.352
HIERARCH ESO ISS AMBI TAU0 START 0.007354
HIERARCH ESO ISS AMBI TAU0 END 0.007255
HIERARCH ESO ISS AMBI TEMP 13.52
HIERARCH ESO ISS AMBI FWHM START 0.78
HIERARCH ESO ISS AMBI FWHM END 0.81
HIERARCH ESO FT ROBJ NAME HD_42581
HIERARCH ESO FT ROBJ ALPHA 061034.615
HIERARCH ESO FT ROBJ DELTA -215152.656