Exposure
ID
GRAVI.2022-11-11T06:21:54.427_1
Header ID
GRAVI.2022-11-11T06:21:54.427
Date updated
2022-11-11 06:35:46 UTC+0000
Release date
2023-11-11 06:35:46 UTC+0000
UTC Start
2022-11-11 06:21:54.427
UTC End
2022-11-11 06:27:54.427
MJD Start
59894.26521328
MJD End
59894.2693799467
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.004569
Ambient temperature (°C)
9.34
Seeing (arcsec)
0.535
Observation
ID
53119
Category
science
Program ID
110.23XR.001
Program Title
PROBING A CLOSE BINARY OF SUPERMASSIVE BLACK HOLES WITH GRAVITY
Program Type
Normal
PI / COI
SHANGGUAN/ BROTHERTON/ CAO/ DAVIES/ DEXTER/ DE ZEEUW/ DU/ EISENHAUER/ HO/ LI/ LUTZ/ SANTOS/ SHIMIZU/ SONGSHENG/ STURM/ WANG
Target
ID
39497
Name
Akn120
RA
79.049158
DEC
-0.1501
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 51.8000 52.0800 26.8000 27.4000
U1-U3 94.5060 95.1020 33.6000 34.1000
U1-U4 125.6170 126.4160 62.2300 62.4250
U2-U3 43.5090 43.8110 41.7000 42.1000
U2-U4 88.6780 88.9610 82.0440 82.0730
U3-U4 62.2520 62.0940 108.9450 108.9980
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 110.23XR.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 59894.26521328
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME Akn120
HIERARCH ESO INS SOBJ NAME Akn120
RA 79.049158
DEC -0.1501
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 376.0
HIERARCH ESO DET2 SEQ1 DIT 30.0
HIERARCH ESO DET2 NDIT 12
HIERARCH ESO ISS PBL12 START 51.8
HIERARCH ESO ISS PBL12 END 52.08
HIERARCH ESO ISS PBLA12 START 26.8
HIERARCH ESO ISS PBLA12 END 27.4
HIERARCH ESO ISS PBL13 START 94.506
HIERARCH ESO ISS PBL13 END 95.102
HIERARCH ESO ISS PBLA13 START 33.6
HIERARCH ESO ISS PBLA13 END 34.1
HIERARCH ESO ISS PBL14 START 125.617
HIERARCH ESO ISS PBL14 END 126.416
HIERARCH ESO ISS PBLA14 START 62.23
HIERARCH ESO ISS PBLA14 END 62.425
HIERARCH ESO ISS PBL23 START 43.509
HIERARCH ESO ISS PBL23 END 43.811
HIERARCH ESO ISS PBLA23 START 41.7
HIERARCH ESO ISS PBLA23 END 42.1
HIERARCH ESO ISS PBL24 START 88.678
HIERARCH ESO ISS PBL24 END 88.961
HIERARCH ESO ISS PBLA24 START 82.044
HIERARCH ESO ISS PBLA24 END 82.073
HIERARCH ESO ISS PBL34 START 62.252
HIERARCH ESO ISS PBL34 END 62.094
HIERARCH ESO ISS PBLA34 START 108.945
HIERARCH ESO ISS PBLA34 END 108.998
HIERARCH ESO ISS AMBI TAU0 START 0.005201
HIERARCH ESO ISS AMBI TAU0 END 0.003937
HIERARCH ESO ISS AMBI TEMP 9.34
HIERARCH ESO ISS AMBI FWHM START 0.49
HIERARCH ESO ISS AMBI FWHM END 0.58