Exposure
ID
GRAVI.2022-11-11T05:55:45.361_1
Header ID
GRAVI.2022-11-11T05:55:45.361
Date updated
2022-11-11 06:10:33 UTC+0000
Release date
2023-11-11 06:10:33 UTC+0000
UTC Start
2022-11-11 05:55:45.361
UTC End
2022-11-11 06:01:45.361
MJD Start
59894.24705279
MJD End
59894.2512194567
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.004996
Ambient temperature (°C)
9.38
Seeing (arcsec)
0.645
Observation
ID
53119
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
39497
Name
Akn120
RA
79.049158
DEC
-0.1501
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 50.6230 50.9070 24.0000 24.7000
U1-U3 91.9110 92.5540 31.0000 31.7000
U1-U4 121.5300 122.6300 61.1950 61.4810
U2-U3 42.1360 42.4850 39.5000 40.1000
U2-U4 86.8010 87.3590 81.8560 81.9120
U3-U4 62.4530 62.4710 108.8670 108.8650
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 59894.24705279
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME Akn120
HIERARCH ESO INS SOBJ NAME Akn120
RA 79.049158
DEC -0.1501
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 50.623
HIERARCH ESO ISS PBL12 END 50.907
HIERARCH ESO ISS PBLA12 START 24.0
HIERARCH ESO ISS PBLA12 END 24.7
HIERARCH ESO ISS PBL13 START 91.911
HIERARCH ESO ISS PBL13 END 92.554
HIERARCH ESO ISS PBLA13 START 31.0
HIERARCH ESO ISS PBLA13 END 31.7
HIERARCH ESO ISS PBL14 START 121.53
HIERARCH ESO ISS PBL14 END 122.63
HIERARCH ESO ISS PBLA14 START 61.195
HIERARCH ESO ISS PBLA14 END 61.481
HIERARCH ESO ISS PBL23 START 42.136
HIERARCH ESO ISS PBL23 END 42.485
HIERARCH ESO ISS PBLA23 START 39.5
HIERARCH ESO ISS PBLA23 END 40.1
HIERARCH ESO ISS PBL24 START 86.801
HIERARCH ESO ISS PBL24 END 87.359
HIERARCH ESO ISS PBLA24 START 81.856
HIERARCH ESO ISS PBLA24 END 81.912
HIERARCH ESO ISS PBL34 START 62.453
HIERARCH ESO ISS PBL34 END 62.471
HIERARCH ESO ISS PBLA34 START 108.867
HIERARCH ESO ISS PBLA34 END 108.865
HIERARCH ESO ISS AMBI TAU0 START 0.005081
HIERARCH ESO ISS AMBI TAU0 END 0.004911
HIERARCH ESO ISS AMBI TEMP 9.38
HIERARCH ESO ISS AMBI FWHM START 0.67
HIERARCH ESO ISS AMBI FWHM END 0.62