Exposure
ID
GRAVI.2022-11-15T06:54:00.019_1
Header ID
GRAVI.2022-11-15T06:54:00.019
Date updated
2022-11-15 07:10:36 UTC+0000
Release date
2023-11-15 07:10:35 UTC+0000
UTC Start
2022-11-15 06:54:00.019
UTC End
2022-11-15 07:00:00.019
MJD Start
59898.28750022
MJD End
59898.2916668867
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.016462
Ambient temperature (°C)
15.36
Seeing (arcsec)
0.375
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 53.8240 54.0660 30.8000 31.2000
U1-U3 98.5870 99.0380 37.0000 37.4000
U1-U4 129.7880 130.0070 63.2220 63.2750
U2-U3 45.4590 45.6530 44.4000 44.7000
U2-U4 89.1610 88.9400 82.1140 82.0980
U3-U4 60.0160 59.5460 109.7050 109.8700
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 59898.28750022
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 53.824
HIERARCH ESO ISS PBL12 END 54.066
HIERARCH ESO ISS PBLA12 START 30.8
HIERARCH ESO ISS PBLA12 END 31.2
HIERARCH ESO ISS PBL13 START 98.587
HIERARCH ESO ISS PBL13 END 99.038
HIERARCH ESO ISS PBLA13 START 37.0
HIERARCH ESO ISS PBLA13 END 37.4
HIERARCH ESO ISS PBL14 START 129.788
HIERARCH ESO ISS PBL14 END 130.007
HIERARCH ESO ISS PBLA14 START 63.222
HIERARCH ESO ISS PBLA14 END 63.275
HIERARCH ESO ISS PBL23 START 45.459
HIERARCH ESO ISS PBL23 END 45.653
HIERARCH ESO ISS PBLA23 START 44.4
HIERARCH ESO ISS PBLA23 END 44.7
HIERARCH ESO ISS PBL24 START 89.161
HIERARCH ESO ISS PBL24 END 88.94
HIERARCH ESO ISS PBLA24 START 82.114
HIERARCH ESO ISS PBLA24 END 82.098
HIERARCH ESO ISS PBL34 START 60.016
HIERARCH ESO ISS PBL34 END 59.546
HIERARCH ESO ISS PBLA34 START 109.705
HIERARCH ESO ISS PBLA34 END 109.87
HIERARCH ESO ISS AMBI TAU0 START 0.0166
HIERARCH ESO ISS AMBI TAU0 END 0.016324
HIERARCH ESO ISS AMBI TEMP 15.36
HIERARCH ESO ISS AMBI FWHM START 0.4
HIERARCH ESO ISS AMBI FWHM END 0.35