Exposure
ID
GRAVI.2023-12-28T05:15:06.407_1
Header ID
GRAVI.2023-12-28T05:15:06.407
Date updated
2023-12-28 05:30:40 UTC+0000
Release date
2024-12-28 05:30:39 UTC+0000
UTC Start
2023-12-28 05:15:06.407
UTC End
2023-12-28 05:21:06.407
MJD Start
60306.21882416
MJD End
60306.2229908267
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.006226
Ambient temperature (°C)
13.29
Seeing (arcsec)
0.59
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 55.9370 56.0610 34.3000 34.5000
U1-U3 102.0520 102.1920 39.6000 39.7000
U1-U4 127.8760 127.2330 62.8290 62.6840
U2-U3 46.6390 46.6390 45.9000 45.9000
U2-U4 83.1520 82.2190 81.5810 81.4880
U3-U4 52.8020 51.9320 112.5760 112.9790
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 60306.21882416
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 55.937
HIERARCH ESO ISS PBL12 END 56.061
HIERARCH ESO ISS PBLA12 START 34.3
HIERARCH ESO ISS PBLA12 END 34.5
HIERARCH ESO ISS PBL13 START 102.052
HIERARCH ESO ISS PBL13 END 102.192
HIERARCH ESO ISS PBLA13 START 39.6
HIERARCH ESO ISS PBLA13 END 39.7
HIERARCH ESO ISS PBL14 START 127.876
HIERARCH ESO ISS PBL14 END 127.233
HIERARCH ESO ISS PBLA14 START 62.829
HIERARCH ESO ISS PBLA14 END 62.684
HIERARCH ESO ISS PBL23 START 46.639
HIERARCH ESO ISS PBL23 END 46.639
HIERARCH ESO ISS PBLA23 START 45.9
HIERARCH ESO ISS PBLA23 END 45.9
HIERARCH ESO ISS PBL24 START 83.152
HIERARCH ESO ISS PBL24 END 82.219
HIERARCH ESO ISS PBLA24 START 81.581
HIERARCH ESO ISS PBLA24 END 81.488
HIERARCH ESO ISS PBL34 START 52.802
HIERARCH ESO ISS PBL34 END 51.932
HIERARCH ESO ISS PBLA34 START 112.576
HIERARCH ESO ISS PBLA34 END 112.979
HIERARCH ESO ISS AMBI TAU0 START 0.006189
HIERARCH ESO ISS AMBI TAU0 END 0.006263
HIERARCH ESO ISS AMBI TEMP 13.29
HIERARCH ESO ISS AMBI FWHM START 0.55
HIERARCH ESO ISS AMBI FWHM END 0.63