Exposure
ID
GRAVI.2022-11-11T06:15:21.410_1
Header ID
GRAVI.2022-11-11T06:15:21.410
Date updated
2022-11-11 06:30:38 UTC+0000
Release date
2023-11-11 06:30:38 UTC+0000
UTC Start
2022-11-11 06:15:21.410
UTC End
2022-11-11 06:21:21.410
MJD Start
59894.26066447
MJD End
59894.2648311367
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0048305
Ambient temperature (°C)
9.39
Seeing (arcsec)
0.51
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 51.5050 51.7890 26.1000 26.7000
U1-U3 93.8720 94.4840 33.0000 33.6000
U1-U4 124.7070 125.5860 62.0060 62.2230
U2-U3 43.1820 43.4980 41.2000 41.7000
U2-U4 88.3130 88.6660 82.0070 82.0430
U3-U4 62.3710 62.2570 108.9040 108.9430
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 59894.26066447
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 51.505
HIERARCH ESO ISS PBL12 END 51.789
HIERARCH ESO ISS PBLA12 START 26.1
HIERARCH ESO ISS PBLA12 END 26.7
HIERARCH ESO ISS PBL13 START 93.872
HIERARCH ESO ISS PBL13 END 94.484
HIERARCH ESO ISS PBLA13 START 33.0
HIERARCH ESO ISS PBLA13 END 33.6
HIERARCH ESO ISS PBL14 START 124.707
HIERARCH ESO ISS PBL14 END 125.586
HIERARCH ESO ISS PBLA14 START 62.006
HIERARCH ESO ISS PBLA14 END 62.223
HIERARCH ESO ISS PBL23 START 43.182
HIERARCH ESO ISS PBL23 END 43.498
HIERARCH ESO ISS PBLA23 START 41.2
HIERARCH ESO ISS PBLA23 END 41.7
HIERARCH ESO ISS PBL24 START 88.313
HIERARCH ESO ISS PBL24 END 88.666
HIERARCH ESO ISS PBLA24 START 82.007
HIERARCH ESO ISS PBLA24 END 82.043
HIERARCH ESO ISS PBL34 START 62.371
HIERARCH ESO ISS PBL34 END 62.257
HIERARCH ESO ISS PBLA34 START 108.904
HIERARCH ESO ISS PBLA34 END 108.943
HIERARCH ESO ISS AMBI TAU0 START 0.00446
HIERARCH ESO ISS AMBI TAU0 END 0.005201
HIERARCH ESO ISS AMBI TEMP 9.39
HIERARCH ESO ISS AMBI FWHM START 0.53
HIERARCH ESO ISS AMBI FWHM END 0.49