Exposure
ID
GRAVI.2022-11-15T07:13:33.068_1
Header ID
GRAVI.2022-11-15T07:13:33.068
Date updated
2022-11-15 07:25:35 UTC+0000
Release date
2023-11-15 07:25:35 UTC+0000
UTC Start
2022-11-15 07:13:33.068
UTC End
2022-11-15 07:19:33.068
MJD Start
59898.30107718
MJD End
59898.3052438467
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0172295
Ambient temperature (°C)
15.12
Seeing (arcsec)
0.435
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 54.5470 54.7620 32.0000 32.4000
U1-U3 99.9050 100.2770 38.0000 38.3000
U1-U4 130.2090 130.1820 63.3270 63.3250
U2-U3 46.0060 46.1480 45.1000 45.3000
U2-U4 88.2550 87.8270 82.0440 82.0080
U3-U4 58.4280 57.8350 110.2750 110.4950
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 59898.30107718
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 54.547
HIERARCH ESO ISS PBL12 END 54.762
HIERARCH ESO ISS PBLA12 START 32.0
HIERARCH ESO ISS PBLA12 END 32.4
HIERARCH ESO ISS PBL13 START 99.905
HIERARCH ESO ISS PBL13 END 100.277
HIERARCH ESO ISS PBLA13 START 38.0
HIERARCH ESO ISS PBLA13 END 38.3
HIERARCH ESO ISS PBL14 START 130.209
HIERARCH ESO ISS PBL14 END 130.182
HIERARCH ESO ISS PBLA14 START 63.327
HIERARCH ESO ISS PBLA14 END 63.325
HIERARCH ESO ISS PBL23 START 46.006
HIERARCH ESO ISS PBL23 END 46.148
HIERARCH ESO ISS PBLA23 START 45.1
HIERARCH ESO ISS PBLA23 END 45.3
HIERARCH ESO ISS PBL24 START 88.255
HIERARCH ESO ISS PBL24 END 87.827
HIERARCH ESO ISS PBLA24 START 82.044
HIERARCH ESO ISS PBLA24 END 82.008
HIERARCH ESO ISS PBL34 START 58.428
HIERARCH ESO ISS PBL34 END 57.835
HIERARCH ESO ISS PBLA34 START 110.275
HIERARCH ESO ISS PBLA34 END 110.495
HIERARCH ESO ISS AMBI TAU0 START 0.016826
HIERARCH ESO ISS AMBI TAU0 END 0.017633
HIERARCH ESO ISS AMBI TEMP 15.12
HIERARCH ESO ISS AMBI FWHM START 0.45
HIERARCH ESO ISS AMBI FWHM END 0.42