Exposure
ID
GRAVI.2022-11-11T06:43:00.480_1
Header ID
GRAVI.2022-11-11T06:43:00.480
Date updated
2022-11-11 06:55:43 UTC+0000
Release date
2023-11-11 06:55:43 UTC+0000
UTC Start
2022-11-11 06:43:00.480
UTC End
2022-11-11 06:49:00.480
MJD Start
59894.27986667
MJD End
59894.2840333367
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0053305
Ambient temperature (°C)
9.71
Seeing (arcsec)
0.495
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 52.7260 52.9960 28.7000 29.2000
U1-U3 96.4370 96.9800 35.3000 35.7000
U1-U4 127.9970 128.5470 62.8020 62.9320
U2-U3 44.4690 44.7280 43.1000 43.4000
U2-U4 89.3630 89.4240 82.1170 82.1260
U3-U4 61.5600 61.2610 109.1780 109.2780
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 59894.27986667
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 52.726
HIERARCH ESO ISS PBL12 END 52.996
HIERARCH ESO ISS PBLA12 START 28.7
HIERARCH ESO ISS PBLA12 END 29.2
HIERARCH ESO ISS PBL13 START 96.437
HIERARCH ESO ISS PBL13 END 96.98
HIERARCH ESO ISS PBLA13 START 35.3
HIERARCH ESO ISS PBLA13 END 35.7
HIERARCH ESO ISS PBL14 START 127.997
HIERARCH ESO ISS PBL14 END 128.547
HIERARCH ESO ISS PBLA14 START 62.802
HIERARCH ESO ISS PBLA14 END 62.932
HIERARCH ESO ISS PBL23 START 44.469
HIERARCH ESO ISS PBL23 END 44.728
HIERARCH ESO ISS PBLA23 START 43.1
HIERARCH ESO ISS PBLA23 END 43.4
HIERARCH ESO ISS PBL24 START 89.363
HIERARCH ESO ISS PBL24 END 89.424
HIERARCH ESO ISS PBLA24 START 82.117
HIERARCH ESO ISS PBLA24 END 82.126
HIERARCH ESO ISS PBL34 START 61.56
HIERARCH ESO ISS PBL34 END 61.261
HIERARCH ESO ISS PBLA34 START 109.178
HIERARCH ESO ISS PBLA34 END 109.278
HIERARCH ESO ISS AMBI TAU0 START 0.005378
HIERARCH ESO ISS AMBI TAU0 END 0.005283
HIERARCH ESO ISS AMBI TEMP 9.71
HIERARCH ESO ISS AMBI FWHM START 0.48
HIERARCH ESO ISS AMBI FWHM END 0.51