Exposure
ID
GRAVI.2022-11-15T06:47:27.003_1
Header ID
GRAVI.2022-11-15T06:47:27.003
Date updated
2022-11-15 07:05:27 UTC+0000
Release date
2023-11-15 07:05:27 UTC+0000
UTC Start
2022-11-15 06:47:27.003
UTC End
2022-11-15 06:53:27.003
MJD Start
59898.28295142
MJD End
59898.2871180867
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0172505
Ambient temperature (°C)
15.39
Seeing (arcsec)
0.39
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 53.5670 53.8160 30.3000 30.8000
U1-U3 98.0980 98.5710 36.6000 37.0000
U1-U4 129.4800 129.7790 63.1500 63.2200
U2-U3 45.2430 45.4520 44.1000 44.4000
U2-U4 89.3210 89.1680 82.1240 82.1140
U3-U4 60.4610 60.0330 109.5500 109.6990
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 59898.28295142
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 53.567
HIERARCH ESO ISS PBL12 END 53.816
HIERARCH ESO ISS PBLA12 START 30.3
HIERARCH ESO ISS PBLA12 END 30.8
HIERARCH ESO ISS PBL13 START 98.098
HIERARCH ESO ISS PBL13 END 98.571
HIERARCH ESO ISS PBLA13 START 36.6
HIERARCH ESO ISS PBLA13 END 37.0
HIERARCH ESO ISS PBL14 START 129.48
HIERARCH ESO ISS PBL14 END 129.779
HIERARCH ESO ISS PBLA14 START 63.15
HIERARCH ESO ISS PBLA14 END 63.22
HIERARCH ESO ISS PBL23 START 45.243
HIERARCH ESO ISS PBL23 END 45.452
HIERARCH ESO ISS PBLA23 START 44.1
HIERARCH ESO ISS PBLA23 END 44.4
HIERARCH ESO ISS PBL24 START 89.321
HIERARCH ESO ISS PBL24 END 89.168
HIERARCH ESO ISS PBLA24 START 82.124
HIERARCH ESO ISS PBLA24 END 82.114
HIERARCH ESO ISS PBL34 START 60.461
HIERARCH ESO ISS PBL34 END 60.033
HIERARCH ESO ISS PBLA34 START 109.55
HIERARCH ESO ISS PBLA34 END 109.699
HIERARCH ESO ISS AMBI TAU0 START 0.017901
HIERARCH ESO ISS AMBI TAU0 END 0.0166
HIERARCH ESO ISS AMBI TEMP 15.39
HIERARCH ESO ISS AMBI FWHM START 0.38
HIERARCH ESO ISS AMBI FWHM END 0.4