Exposure
ID
GRAVI.2022-11-11T06:02:18.377_1
Header ID
GRAVI.2022-11-11T06:02:18.377
Date updated
2022-11-11 06:15:42 UTC+0000
Release date
2023-11-11 06:15:42 UTC+0000
UTC Start
2022-11-11 06:02:18.377
UTC End
2022-11-11 06:08:18.377
MJD Start
59894.25160159
MJD End
59894.2557682567
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0044415
Ambient temperature (°C)
9.52
Seeing (arcsec)
0.605
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 50.9180 51.2020 24.7000 25.4000
U1-U3 92.5770 93.2080 31.7000 32.3000
U1-U4 122.6690 123.6920 61.4910 61.7520
U2-U3 42.4970 42.8340 40.1000 40.7000
U2-U4 87.3780 87.8650 81.9130 81.9620
U3-U4 62.4710 62.4450 108.8650 108.8770
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 59894.25160159
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 50.918
HIERARCH ESO ISS PBL12 END 51.202
HIERARCH ESO ISS PBLA12 START 24.7
HIERARCH ESO ISS PBLA12 END 25.4
HIERARCH ESO ISS PBL13 START 92.577
HIERARCH ESO ISS PBL13 END 93.208
HIERARCH ESO ISS PBLA13 START 31.7
HIERARCH ESO ISS PBLA13 END 32.3
HIERARCH ESO ISS PBL14 START 122.669
HIERARCH ESO ISS PBL14 END 123.692
HIERARCH ESO ISS PBLA14 START 61.491
HIERARCH ESO ISS PBLA14 END 61.752
HIERARCH ESO ISS PBL23 START 42.497
HIERARCH ESO ISS PBL23 END 42.834
HIERARCH ESO ISS PBLA23 START 40.1
HIERARCH ESO ISS PBLA23 END 40.7
HIERARCH ESO ISS PBL24 START 87.378
HIERARCH ESO ISS PBL24 END 87.865
HIERARCH ESO ISS PBLA24 START 81.913
HIERARCH ESO ISS PBLA24 END 81.962
HIERARCH ESO ISS PBL34 START 62.471
HIERARCH ESO ISS PBL34 END 62.445
HIERARCH ESO ISS PBLA34 START 108.865
HIERARCH ESO ISS PBLA34 END 108.877
HIERARCH ESO ISS AMBI TAU0 START 0.004911
HIERARCH ESO ISS AMBI TAU0 END 0.003972
HIERARCH ESO ISS AMBI TEMP 9.52
HIERARCH ESO ISS AMBI FWHM START 0.62
HIERARCH ESO ISS AMBI FWHM END 0.59