Exposure
ID
GRAVI.2022-11-15T07:31:06.112_1
Header ID
GRAVI.2022-11-15T07:31:06.112
Date updated
2022-11-15 07:45:34 UTC+0000
Release date
2023-11-15 07:45:34 UTC+0000
UTC Start
2022-11-15 07:31:06.112
UTC End
2022-11-15 07:37:06.112
MJD Start
59898.31326519
MJD End
59898.3174318567
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0176945
Ambient temperature (°C)
15.17
Seeing (arcsec)
0.45
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 55.1180 55.3030 33.0000 33.3000
U1-U3 100.8700 101.1630 38.7000 38.9000
U1-U4 129.9380 129.6910 63.2770 63.2260
U2-U3 46.3560 46.4490 45.6000 45.7000
U2-U4 86.9030 86.2940 81.9290 81.8750
U3-U4 56.6890 55.9940 110.9360 111.2110
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 59898.31326519
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 55.118
HIERARCH ESO ISS PBL12 END 55.303
HIERARCH ESO ISS PBLA12 START 33.0
HIERARCH ESO ISS PBLA12 END 33.3
HIERARCH ESO ISS PBL13 START 100.87
HIERARCH ESO ISS PBL13 END 101.163
HIERARCH ESO ISS PBLA13 START 38.7
HIERARCH ESO ISS PBLA13 END 38.9
HIERARCH ESO ISS PBL14 START 129.938
HIERARCH ESO ISS PBL14 END 129.691
HIERARCH ESO ISS PBLA14 START 63.277
HIERARCH ESO ISS PBLA14 END 63.226
HIERARCH ESO ISS PBL23 START 46.356
HIERARCH ESO ISS PBL23 END 46.449
HIERARCH ESO ISS PBLA23 START 45.6
HIERARCH ESO ISS PBLA23 END 45.7
HIERARCH ESO ISS PBL24 START 86.903
HIERARCH ESO ISS PBL24 END 86.294
HIERARCH ESO ISS PBLA24 START 81.929
HIERARCH ESO ISS PBLA24 END 81.875
HIERARCH ESO ISS PBL34 START 56.689
HIERARCH ESO ISS PBL34 END 55.994
HIERARCH ESO ISS PBLA34 START 110.936
HIERARCH ESO ISS PBLA34 END 111.211
HIERARCH ESO ISS AMBI TAU0 START 0.016559
HIERARCH ESO ISS AMBI TAU0 END 0.01883
HIERARCH ESO ISS AMBI TEMP 15.17
HIERARCH ESO ISS AMBI FWHM START 0.44
HIERARCH ESO ISS AMBI FWHM END 0.46