Exposure
ID
GRAVI.2023-12-28T05:01:57.374_1
Header ID
GRAVI.2023-12-28T05:01:57.374
Date updated
2023-12-28 05:15:33 UTC+0000
Release date
2024-12-28 05:15:33 UTC+0000
UTC Start
2023-12-28 05:01:57.374
UTC End
2023-12-28 05:07:57.374
MJD Start
60306.20969183
MJD End
60306.2138584967
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.00658
Ambient temperature (°C)
13.5
Seeing (arcsec)
0.56
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 55.6380 55.7880 33.8000 34.1000
U1-U3 101.6600 101.8650 39.3000 39.4000
U1-U4 128.9660 128.4840 63.0700 62.9640
U2-U3 46.5790 46.6180 45.8000 45.9000
U2-U4 84.8910 84.0890 81.7470 81.6710
U3-U4 54.5060 53.7050 111.8260 112.1720
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 60306.20969183
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 55.638
HIERARCH ESO ISS PBL12 END 55.788
HIERARCH ESO ISS PBLA12 START 33.8
HIERARCH ESO ISS PBLA12 END 34.1
HIERARCH ESO ISS PBL13 START 101.66
HIERARCH ESO ISS PBL13 END 101.865
HIERARCH ESO ISS PBLA13 START 39.3
HIERARCH ESO ISS PBLA13 END 39.4
HIERARCH ESO ISS PBL14 START 128.966
HIERARCH ESO ISS PBL14 END 128.484
HIERARCH ESO ISS PBLA14 START 63.07
HIERARCH ESO ISS PBLA14 END 62.964
HIERARCH ESO ISS PBL23 START 46.579
HIERARCH ESO ISS PBL23 END 46.618
HIERARCH ESO ISS PBLA23 START 45.8
HIERARCH ESO ISS PBLA23 END 45.9
HIERARCH ESO ISS PBL24 START 84.891
HIERARCH ESO ISS PBL24 END 84.089
HIERARCH ESO ISS PBLA24 START 81.747
HIERARCH ESO ISS PBLA24 END 81.671
HIERARCH ESO ISS PBL34 START 54.506
HIERARCH ESO ISS PBL34 END 53.705
HIERARCH ESO ISS PBLA34 START 111.826
HIERARCH ESO ISS PBLA34 END 112.172
HIERARCH ESO ISS AMBI TAU0 START 0.006873
HIERARCH ESO ISS AMBI TAU0 END 0.006287
HIERARCH ESO ISS AMBI TEMP 13.5
HIERARCH ESO ISS AMBI FWHM START 0.55
HIERARCH ESO ISS AMBI FWHM END 0.57