Exposure
ID
GRAVI.2023-12-28T05:21:42.424_1
Header ID
GRAVI.2023-12-28T05:21:42.424
Date updated
2023-12-28 05:35:46 UTC+0000
Release date
2024-12-28 05:35:46 UTC+0000
UTC Start
2023-12-28 05:21:42.424
UTC End
2023-12-28 05:27:42.424
MJD Start
60306.22340769
MJD End
60306.2275743567
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.006023
Ambient temperature (°C)
13.07
Seeing (arcsec)
0.645
Observation
ID
58072
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
43005
Name
Akn120
RA
79.049517
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 56.0660 56.1760 34.5000 34.6000
U1-U3 102.1980 102.3050 39.7000 39.7000
U1-U4 127.2000 126.4820 62.6770 62.5120
U2-U3 46.6380 46.6190 45.9000 45.9000
U2-U4 82.1730 81.1820 81.4840 81.3830
U3-U4 51.8900 50.9930 112.9990 113.4310
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 60306.22340769
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME Mrk 1095
HIERARCH ESO INS SOBJ NAME Akn120
RA 79.049517
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 56.066
HIERARCH ESO ISS PBL12 END 56.176
HIERARCH ESO ISS PBLA12 START 34.5
HIERARCH ESO ISS PBLA12 END 34.6
HIERARCH ESO ISS PBL13 START 102.198
HIERARCH ESO ISS PBL13 END 102.305
HIERARCH ESO ISS PBLA13 START 39.7
HIERARCH ESO ISS PBLA13 END 39.7
HIERARCH ESO ISS PBL14 START 127.2
HIERARCH ESO ISS PBL14 END 126.482
HIERARCH ESO ISS PBLA14 START 62.677
HIERARCH ESO ISS PBLA14 END 62.512
HIERARCH ESO ISS PBL23 START 46.638
HIERARCH ESO ISS PBL23 END 46.619
HIERARCH ESO ISS PBLA23 START 45.9
HIERARCH ESO ISS PBLA23 END 45.9
HIERARCH ESO ISS PBL24 START 82.173
HIERARCH ESO ISS PBL24 END 81.182
HIERARCH ESO ISS PBLA24 START 81.484
HIERARCH ESO ISS PBLA24 END 81.383
HIERARCH ESO ISS PBL34 START 51.89
HIERARCH ESO ISS PBL34 END 50.993
HIERARCH ESO ISS PBLA34 START 112.999
HIERARCH ESO ISS PBLA34 END 113.431
HIERARCH ESO ISS AMBI TAU0 START 0.006263
HIERARCH ESO ISS AMBI TAU0 END 0.005783
HIERARCH ESO ISS AMBI TEMP 13.07
HIERARCH ESO ISS AMBI FWHM START 0.63
HIERARCH ESO ISS AMBI FWHM END 0.66