Exposure
ID
GRAVI.2022-11-11T06:28:27.444_1
Header ID
GRAVI.2022-11-11T06:28:27.444
Date updated
2022-11-11 06:45:51 UTC+0000
Release date
2023-11-11 06:45:51 UTC+0000
UTC Start
2022-11-11 06:28:27.444
UTC End
2022-11-11 06:34:27.444
MJD Start
59894.26976208
MJD End
59894.2739287467
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0040025
Ambient temperature (°C)
9.48
Seeing (arcsec)
0.55
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 52.0910 52.3680 27.4000 28.0000
U1-U3 95.1230 95.7030 34.1000 34.6000
U1-U4 126.4440 127.1670 62.4310 62.6050
U2-U3 43.8220 44.1110 42.2000 42.6000
U2-U4 88.9700 89.1840 82.0740 82.0970
U3-U4 62.0870 61.8860 109.0010 109.0680
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 59894.26976208
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 52.091
HIERARCH ESO ISS PBL12 END 52.368
HIERARCH ESO ISS PBLA12 START 27.4
HIERARCH ESO ISS PBLA12 END 28.0
HIERARCH ESO ISS PBL13 START 95.123
HIERARCH ESO ISS PBL13 END 95.703
HIERARCH ESO ISS PBLA13 START 34.1
HIERARCH ESO ISS PBLA13 END 34.6
HIERARCH ESO ISS PBL14 START 126.444
HIERARCH ESO ISS PBL14 END 127.167
HIERARCH ESO ISS PBLA14 START 62.431
HIERARCH ESO ISS PBLA14 END 62.605
HIERARCH ESO ISS PBL23 START 43.822
HIERARCH ESO ISS PBL23 END 44.111
HIERARCH ESO ISS PBLA23 START 42.2
HIERARCH ESO ISS PBLA23 END 42.6
HIERARCH ESO ISS PBL24 START 88.97
HIERARCH ESO ISS PBL24 END 89.184
HIERARCH ESO ISS PBLA24 START 82.074
HIERARCH ESO ISS PBLA24 END 82.097
HIERARCH ESO ISS PBL34 START 62.087
HIERARCH ESO ISS PBL34 END 61.886
HIERARCH ESO ISS PBLA34 START 109.001
HIERARCH ESO ISS PBLA34 END 109.068
HIERARCH ESO ISS AMBI TAU0 START 0.003937
HIERARCH ESO ISS AMBI TAU0 END 0.004068
HIERARCH ESO ISS AMBI TEMP 9.48
HIERARCH ESO ISS AMBI FWHM START 0.58
HIERARCH ESO ISS AMBI FWHM END 0.52