Exposure
ID
GRAVI.2023-12-28T05:28:18.441_1
Header ID
GRAVI.2023-12-28T05:28:18.441
Date updated
2023-12-28 05:45:21 UTC+0000
Release date
2024-12-28 05:45:21 UTC+0000
UTC Start
2023-12-28 05:28:18.441
UTC End
2023-12-28 05:34:18.441
MJD Start
60306.22799121
MJD End
60306.2321578767
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.004955
Ambient temperature (°C)
12.91
Seeing (arcsec)
0.78
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 56.1800 56.2760 34.7000 34.8000
U1-U3 102.3080 102.3820 39.7000 39.8000
U1-U4 126.4500 125.6530 62.5050 62.3200
U2-U3 46.6180 46.5800 45.9000 45.9000
U2-U4 81.1380 80.0840 81.3780 81.2680
U3-U4 50.9540 50.0260 113.4500 113.9150
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 60306.22799121
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 56.18
HIERARCH ESO ISS PBL12 END 56.276
HIERARCH ESO ISS PBLA12 START 34.7
HIERARCH ESO ISS PBLA12 END 34.8
HIERARCH ESO ISS PBL13 START 102.308
HIERARCH ESO ISS PBL13 END 102.382
HIERARCH ESO ISS PBLA13 START 39.7
HIERARCH ESO ISS PBLA13 END 39.8
HIERARCH ESO ISS PBL14 START 126.45
HIERARCH ESO ISS PBL14 END 125.653
HIERARCH ESO ISS PBLA14 START 62.505
HIERARCH ESO ISS PBLA14 END 62.32
HIERARCH ESO ISS PBL23 START 46.618
HIERARCH ESO ISS PBL23 END 46.58
HIERARCH ESO ISS PBLA23 START 45.9
HIERARCH ESO ISS PBLA23 END 45.9
HIERARCH ESO ISS PBL24 START 81.138
HIERARCH ESO ISS PBL24 END 80.084
HIERARCH ESO ISS PBLA24 START 81.378
HIERARCH ESO ISS PBLA24 END 81.268
HIERARCH ESO ISS PBL34 START 50.954
HIERARCH ESO ISS PBL34 END 50.026
HIERARCH ESO ISS PBLA34 START 113.45
HIERARCH ESO ISS PBLA34 END 113.915
HIERARCH ESO ISS AMBI TAU0 START 0.005783
HIERARCH ESO ISS AMBI TAU0 END 0.004127
HIERARCH ESO ISS AMBI TEMP 12.91
HIERARCH ESO ISS AMBI FWHM START 0.66
HIERARCH ESO ISS AMBI FWHM END 0.9