Exposure
ID
GRAVI.2022-11-15T08:19:12.234_1
Header ID
GRAVI.2022-11-15T08:19:12.234
Date updated
2022-11-15 08:35:36 UTC+0000
Release date
2023-11-15 08:35:36 UTC+0000
UTC Start
2022-11-15 08:19:12.234
UTC End
2022-11-15 08:25:12.234
MJD Start
59898.34666938
MJD End
59898.3508360467
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.016398
Ambient temperature (°C)
15.19
Seeing (arcsec)
0.37
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 56.2250 56.3150 34.7000 34.9000
U1-U3 102.3450 102.4050 39.8000 39.8000
U1-U4 126.0990 125.2700 62.4240 62.2290
U2-U3 46.6030 46.5570 45.9000 45.8000
U2-U4 80.6690 79.5880 81.3300 81.2140
U3-U4 50.5380 49.5970 113.6560 114.1370
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 59898.34666938
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 56.225
HIERARCH ESO ISS PBL12 END 56.315
HIERARCH ESO ISS PBLA12 START 34.7
HIERARCH ESO ISS PBLA12 END 34.9
HIERARCH ESO ISS PBL13 START 102.345
HIERARCH ESO ISS PBL13 END 102.405
HIERARCH ESO ISS PBLA13 START 39.8
HIERARCH ESO ISS PBLA13 END 39.8
HIERARCH ESO ISS PBL14 START 126.099
HIERARCH ESO ISS PBL14 END 125.27
HIERARCH ESO ISS PBLA14 START 62.424
HIERARCH ESO ISS PBLA14 END 62.229
HIERARCH ESO ISS PBL23 START 46.603
HIERARCH ESO ISS PBL23 END 46.557
HIERARCH ESO ISS PBLA23 START 45.9
HIERARCH ESO ISS PBLA23 END 45.8
HIERARCH ESO ISS PBL24 START 80.669
HIERARCH ESO ISS PBL24 END 79.588
HIERARCH ESO ISS PBLA24 START 81.33
HIERARCH ESO ISS PBLA24 END 81.214
HIERARCH ESO ISS PBL34 START 50.538
HIERARCH ESO ISS PBL34 END 49.597
HIERARCH ESO ISS PBLA34 START 113.656
HIERARCH ESO ISS PBLA34 END 114.137
HIERARCH ESO ISS AMBI TAU0 START 0.01736
HIERARCH ESO ISS AMBI TAU0 END 0.015436
HIERARCH ESO ISS AMBI TEMP 15.19
HIERARCH ESO ISS AMBI FWHM START 0.36
HIERARCH ESO ISS AMBI FWHM END 0.38