Exposure
ID
GRAVI.2022-11-11T06:08:48.394_1
Header ID
GRAVI.2022-11-11T06:08:48.394
Date updated
2022-11-11 06:25:35 UTC+0000
Release date
2023-11-11 06:25:34 UTC+0000
UTC Start
2022-11-11 06:08:48.394
UTC End
2022-11-11 06:14:48.394
MJD Start
59894.25611567
MJD End
59894.2602823367
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0046895
Ambient temperature (°C)
9.44
Seeing (arcsec)
0.615
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 51.2110 51.4940 25.4000 26.1000
U1-U3 93.2280 93.8490 32.4000 33.0000
U1-U4 123.7230 124.6730 61.7600 61.9980
U2-U3 42.8440 43.1700 40.7000 41.2000
U2-U4 87.8790 88.2990 81.9640 82.0060
U3-U4 62.4440 62.3740 108.8770 108.9030
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 59894.25611567
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 51.211
HIERARCH ESO ISS PBL12 END 51.494
HIERARCH ESO ISS PBLA12 START 25.4
HIERARCH ESO ISS PBLA12 END 26.1
HIERARCH ESO ISS PBL13 START 93.228
HIERARCH ESO ISS PBL13 END 93.849
HIERARCH ESO ISS PBLA13 START 32.4
HIERARCH ESO ISS PBLA13 END 33.0
HIERARCH ESO ISS PBL14 START 123.723
HIERARCH ESO ISS PBL14 END 124.673
HIERARCH ESO ISS PBLA14 START 61.76
HIERARCH ESO ISS PBLA14 END 61.998
HIERARCH ESO ISS PBL23 START 42.844
HIERARCH ESO ISS PBL23 END 43.17
HIERARCH ESO ISS PBLA23 START 40.7
HIERARCH ESO ISS PBLA23 END 41.2
HIERARCH ESO ISS PBL24 START 87.879
HIERARCH ESO ISS PBL24 END 88.299
HIERARCH ESO ISS PBLA24 START 81.964
HIERARCH ESO ISS PBLA24 END 82.006
HIERARCH ESO ISS PBL34 START 62.444
HIERARCH ESO ISS PBL34 END 62.374
HIERARCH ESO ISS PBLA34 START 108.877
HIERARCH ESO ISS PBLA34 END 108.903
HIERARCH ESO ISS AMBI TAU0 START 0.003972
HIERARCH ESO ISS AMBI TAU0 END 0.005407
HIERARCH ESO ISS AMBI TEMP 9.44
HIERARCH ESO ISS AMBI FWHM START 0.59
HIERARCH ESO ISS AMBI FWHM END 0.64