Exposure
ID
GRAVI.2022-11-15T07:53:03.168_1
Header ID
GRAVI.2022-11-15T07:53:03.168
Date updated
2022-11-15 08:05:30 UTC+0000
Release date
2023-11-15 08:05:30 UTC+0000
UTC Start
2022-11-15 07:53:03.168
UTC End
2022-11-15 07:59:03.168
MJD Start
59898.32850889
MJD End
59898.3326755567
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.014914
Ambient temperature (°C)
15.25
Seeing (arcsec)
0.4
Observation
ID
53150
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
39520
Name
Akn120
RA
79.049128
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 55.7120 55.8560 33.9000 34.2000
U1-U3 101.7630 101.9520 39.4000 39.5000
U1-U4 128.7420 128.2250 63.0220 62.9080
U2-U3 46.6000 46.6300 45.9000 45.9000
U2-U4 84.5100 83.6820 81.7120 81.6330
U3-U4 54.1220 53.3080 111.9910 112.3480
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 59898.32850889
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME Akn120
HIERARCH ESO INS SOBJ NAME Akn120
RA 79.049128
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 55.712
HIERARCH ESO ISS PBL12 END 55.856
HIERARCH ESO ISS PBLA12 START 33.9
HIERARCH ESO ISS PBLA12 END 34.2
HIERARCH ESO ISS PBL13 START 101.763
HIERARCH ESO ISS PBL13 END 101.952
HIERARCH ESO ISS PBLA13 START 39.4
HIERARCH ESO ISS PBLA13 END 39.5
HIERARCH ESO ISS PBL14 START 128.742
HIERARCH ESO ISS PBL14 END 128.225
HIERARCH ESO ISS PBLA14 START 63.022
HIERARCH ESO ISS PBLA14 END 62.908
HIERARCH ESO ISS PBL23 START 46.6
HIERARCH ESO ISS PBL23 END 46.63
HIERARCH ESO ISS PBLA23 START 45.9
HIERARCH ESO ISS PBLA23 END 45.9
HIERARCH ESO ISS PBL24 START 84.51
HIERARCH ESO ISS PBL24 END 83.682
HIERARCH ESO ISS PBLA24 START 81.712
HIERARCH ESO ISS PBLA24 END 81.633
HIERARCH ESO ISS PBL34 START 54.122
HIERARCH ESO ISS PBL34 END 53.308
HIERARCH ESO ISS PBLA34 START 111.991
HIERARCH ESO ISS PBLA34 END 112.348
HIERARCH ESO ISS AMBI TAU0 START 0.013575
HIERARCH ESO ISS AMBI TAU0 END 0.016253
HIERARCH ESO ISS AMBI TEMP 15.25
HIERARCH ESO ISS AMBI FWHM START 0.42
HIERARCH ESO ISS AMBI FWHM END 0.38