Exposure
ID
GRAVI.2022-11-11T05:05:12.233_1
Header ID
GRAVI.2022-11-11T05:05:12.233
Date updated
2022-11-11 05:20:36 UTC+0000
Release date
2023-11-11 05:20:36 UTC+0000
UTC Start
2022-11-11 05:05:12.233
UTC End
2022-11-11 05:11:12.233
MJD Start
59894.21194714
MJD End
59894.2161138067
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0059625
Ambient temperature (°C)
9.89
Seeing (arcsec)
0.435
Observation
ID
53117
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
39495
Name
Akn120
RA
79.049116
DEC
-0.14998
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 48.4870 48.7330 17.4000 18.3000
U1-U3 86.7240 87.3600 24.7000 25.6000
U1-U4 110.4460 112.0390 57.9500 58.4620
U2-U3 39.1220 39.5130 33.8000 34.6000
U2-U4 80.0610 81.1220 81.1340 81.2550
U3-U4 60.7770 61.1340 109.3800 109.2660
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 59894.21194714
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME Akn120
HIERARCH ESO INS SOBJ NAME Akn120
RA 79.049116
DEC -0.14998
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 48.487
HIERARCH ESO ISS PBL12 END 48.733
HIERARCH ESO ISS PBLA12 START 17.4
HIERARCH ESO ISS PBLA12 END 18.3
HIERARCH ESO ISS PBL13 START 86.724
HIERARCH ESO ISS PBL13 END 87.36
HIERARCH ESO ISS PBLA13 START 24.7
HIERARCH ESO ISS PBLA13 END 25.6
HIERARCH ESO ISS PBL14 START 110.446
HIERARCH ESO ISS PBL14 END 112.039
HIERARCH ESO ISS PBLA14 START 57.95
HIERARCH ESO ISS PBLA14 END 58.462
HIERARCH ESO ISS PBL23 START 39.122
HIERARCH ESO ISS PBL23 END 39.513
HIERARCH ESO ISS PBLA23 START 33.8
HIERARCH ESO ISS PBLA23 END 34.6
HIERARCH ESO ISS PBL24 START 80.061
HIERARCH ESO ISS PBL24 END 81.122
HIERARCH ESO ISS PBLA24 START 81.134
HIERARCH ESO ISS PBLA24 END 81.255
HIERARCH ESO ISS PBL34 START 60.777
HIERARCH ESO ISS PBL34 END 61.134
HIERARCH ESO ISS PBLA34 START 109.38
HIERARCH ESO ISS PBLA34 END 109.266
HIERARCH ESO ISS AMBI TAU0 START 0.006835
HIERARCH ESO ISS AMBI TAU0 END 0.00509
HIERARCH ESO ISS AMBI TEMP 9.89
HIERARCH ESO ISS AMBI FWHM START 0.38
HIERARCH ESO ISS AMBI FWHM END 0.49