Exposure
ID
GRAVI.2022-11-15T08:12:39.218_1
Header ID
GRAVI.2022-11-15T08:12:39.218
Date updated
2022-11-15 08:25:41 UTC+0000
Release date
2023-11-15 08:25:41 UTC+0000
UTC Start
2022-11-15 08:12:39.218
UTC End
2022-11-15 08:18:39.218
MJD Start
59898.34212058
MJD End
59898.3462872467
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0169215
Ambient temperature (°C)
15.07
Seeing (arcsec)
0.365
Observation
ID
53150
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
39520
Name
Akn120
RA
79.049128
DEC
-0.14997
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 56.1180 56.2220 34.6000 34.7000
U1-U3 102.2500 102.3430 39.7000 39.8000
U1-U4 126.8810 126.1280 62.6050 62.4310
U2-U3 46.6320 46.6050 45.9000 45.9000
U2-U4 81.7280 80.7080 81.4390 81.3340
U3-U4 51.4840 50.5720 113.1930 113.6390
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 59898.34212058
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME Akn120
HIERARCH ESO INS SOBJ NAME Akn120
RA 79.049128
DEC -0.14997
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 56.118
HIERARCH ESO ISS PBL12 END 56.222
HIERARCH ESO ISS PBLA12 START 34.6
HIERARCH ESO ISS PBLA12 END 34.7
HIERARCH ESO ISS PBL13 START 102.25
HIERARCH ESO ISS PBL13 END 102.343
HIERARCH ESO ISS PBLA13 START 39.7
HIERARCH ESO ISS PBLA13 END 39.8
HIERARCH ESO ISS PBL14 START 126.881
HIERARCH ESO ISS PBL14 END 126.128
HIERARCH ESO ISS PBLA14 START 62.605
HIERARCH ESO ISS PBLA14 END 62.431
HIERARCH ESO ISS PBL23 START 46.632
HIERARCH ESO ISS PBL23 END 46.605
HIERARCH ESO ISS PBLA23 START 45.9
HIERARCH ESO ISS PBLA23 END 45.9
HIERARCH ESO ISS PBL24 START 81.728
HIERARCH ESO ISS PBL24 END 80.708
HIERARCH ESO ISS PBLA24 START 81.439
HIERARCH ESO ISS PBLA24 END 81.334
HIERARCH ESO ISS PBL34 START 51.484
HIERARCH ESO ISS PBL34 END 50.572
HIERARCH ESO ISS PBLA34 START 113.193
HIERARCH ESO ISS PBLA34 END 113.639
HIERARCH ESO ISS AMBI TAU0 START 0.016483
HIERARCH ESO ISS AMBI TAU0 END 0.01736
HIERARCH ESO ISS AMBI TEMP 15.07
HIERARCH ESO ISS AMBI FWHM START 0.37
HIERARCH ESO ISS AMBI FWHM END 0.36