Exposure
ID
GRAVI.2022-11-11T04:58:39.217_1
Header ID
GRAVI.2022-11-11T04:58:39.217
Date updated
2022-11-11 05:15:51 UTC+0000
Release date
2023-11-11 05:15:51 UTC+0000
UTC Start
2022-11-11 04:58:39.217
UTC End
2022-11-11 05:04:39.217
MJD Start
59894.20739834
MJD End
59894.2115650067
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.007331
Ambient temperature (°C)
9.94
Seeing (arcsec)
0.385
Observation
ID
53117
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
39495
Name
Akn120
RA
79.049116
DEC
-0.14998
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 48.2430 48.4780 16.5000 17.4000
U1-U3 86.0780 86.7010 23.8000 24.7000
U1-U4 108.7480 110.3860 57.3840 57.9300
U2-U3 38.7180 39.1080 32.9000 33.8000
U2-U4 78.9050 80.0210 80.9990 81.1300
U3-U4 60.3650 60.7630 109.5140 109.3840
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 59894.20739834
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME Akn120
HIERARCH ESO INS SOBJ NAME Akn120
RA 79.049116
DEC -0.14998
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 48.243
HIERARCH ESO ISS PBL12 END 48.478
HIERARCH ESO ISS PBLA12 START 16.5
HIERARCH ESO ISS PBLA12 END 17.4
HIERARCH ESO ISS PBL13 START 86.078
HIERARCH ESO ISS PBL13 END 86.701
HIERARCH ESO ISS PBLA13 START 23.8
HIERARCH ESO ISS PBLA13 END 24.7
HIERARCH ESO ISS PBL14 START 108.748
HIERARCH ESO ISS PBL14 END 110.386
HIERARCH ESO ISS PBLA14 START 57.384
HIERARCH ESO ISS PBLA14 END 57.93
HIERARCH ESO ISS PBL23 START 38.718
HIERARCH ESO ISS PBL23 END 39.108
HIERARCH ESO ISS PBLA23 START 32.9
HIERARCH ESO ISS PBLA23 END 33.8
HIERARCH ESO ISS PBL24 START 78.905
HIERARCH ESO ISS PBL24 END 80.021
HIERARCH ESO ISS PBLA24 START 80.999
HIERARCH ESO ISS PBLA24 END 81.13
HIERARCH ESO ISS PBL34 START 60.365
HIERARCH ESO ISS PBL34 END 60.763
HIERARCH ESO ISS PBLA34 START 109.514
HIERARCH ESO ISS PBLA34 END 109.384
HIERARCH ESO ISS AMBI TAU0 START 0.007827
HIERARCH ESO ISS AMBI TAU0 END 0.006835
HIERARCH ESO ISS AMBI TEMP 9.94
HIERARCH ESO ISS AMBI FWHM START 0.39
HIERARCH ESO ISS AMBI FWHM END 0.38