Exposure
ID
GRAVI.2024-12-19T06:54:12.220_1
Header ID
GRAVI.2024-12-19T06:54:12.220
Date updated
2024-12-19 07:10:32 UTC+0000
Release date
2025-12-19 07:10:32 UTC+0000
UTC Start
2024-12-19 06:54:12.220
UTC End
2024-12-19 07:00:52.220
MJD Start
60663.28764143
MJD End
60663.292271059625
Exposure time (s)
400.0
Validation level
1
Tau 0: Coherence time (s)
0.008192999999999999
Ambient temperature (°C)
13.93
Seeing (arcsec)
0.685
Observation
ID
62760
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
46691
Name
HD_42581_B
RA
92.643208
DEC
-21.86937
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 55.4810 55.2950 35.1000 35.5000
U1-U3 99.5060 99.0400 41.1000 41.4000
U1-U4 120.1030 118.7440 69.1260 69.5250
U2-U3 44.6980 44.4080 48.5000 48.8000
U2-U4 80.3300 79.1990 91.8360 92.5120
U3-U4 56.8130 56.2020 124.5130 125.5910
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 60663.28764143
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 42581 B
HIERARCH ESO INS SOBJ NAME HD_42581_B
RA 92.643208
DEC -21.86937
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 55.481
HIERARCH ESO ISS PBL12 END 55.295
HIERARCH ESO ISS PBLA12 START 35.1
HIERARCH ESO ISS PBLA12 END 35.5
HIERARCH ESO ISS PBL13 START 99.506
HIERARCH ESO ISS PBL13 END 99.04
HIERARCH ESO ISS PBLA13 START 41.1
HIERARCH ESO ISS PBLA13 END 41.4
HIERARCH ESO ISS PBL14 START 120.103
HIERARCH ESO ISS PBL14 END 118.744
HIERARCH ESO ISS PBLA14 START 69.126
HIERARCH ESO ISS PBLA14 END 69.525
HIERARCH ESO ISS PBL23 START 44.698
HIERARCH ESO ISS PBL23 END 44.408
HIERARCH ESO ISS PBLA23 START 48.5
HIERARCH ESO ISS PBLA23 END 48.8
HIERARCH ESO ISS PBL24 START 80.33
HIERARCH ESO ISS PBL24 END 79.199
HIERARCH ESO ISS PBLA24 START 91.836
HIERARCH ESO ISS PBLA24 END 92.512
HIERARCH ESO ISS PBL34 START 56.813
HIERARCH ESO ISS PBL34 END 56.202
HIERARCH ESO ISS PBLA34 START 124.513
HIERARCH ESO ISS PBLA34 END 125.591
HIERARCH ESO ISS AMBI TAU0 START 0.008411
HIERARCH ESO ISS AMBI TAU0 END 0.007975
HIERARCH ESO ISS AMBI TEMP 13.93
HIERARCH ESO ISS AMBI FWHM START 0.68
HIERARCH ESO ISS AMBI FWHM END 0.69
HIERARCH ESO FT ROBJ NAME HD_42581
HIERARCH ESO FT ROBJ ALPHA 061034.615
HIERARCH ESO FT ROBJ DELTA -215152.656