Exposure
ID
GRAVI.2023-12-30T01:45:37.349_1
Header ID
GRAVI.2023-12-30T01:45:37.349
Date updated
2023-12-30 02:00:39 UTC+0000
Release date
2024-12-30 02:00:39 UTC+0000
UTC Start
2023-12-30 01:45:37.349
UTC End
2023-12-30 01:51:37.349
MJD Start
60308.07334895
MJD End
60308.0775156167
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0091685
Ambient temperature (°C)
13.51
Seeing (arcsec)
0.615
Observation
ID
58095
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
43019
Name
Akn120
RA
79.049256
DEC
-0.15004
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 48.1930 48.4260 16.2000 17.2000
U1-U3 85.9430 86.5630 23.6000 24.5000
U1-U4 108.3810 110.0290 57.2580 57.8120
U2-U3 38.6330 39.0220 32.7000 33.6000
U2-U4 78.6510 79.7800 80.9680 81.1010
U3-U4 60.2720 60.6780 109.5430 109.4110
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 60308.07334895
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME Mrk 1095
HIERARCH ESO INS SOBJ NAME Akn120
RA 79.049256
DEC -0.15004
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 48.193
HIERARCH ESO ISS PBL12 END 48.426
HIERARCH ESO ISS PBLA12 START 16.2
HIERARCH ESO ISS PBLA12 END 17.2
HIERARCH ESO ISS PBL13 START 85.943
HIERARCH ESO ISS PBL13 END 86.563
HIERARCH ESO ISS PBLA13 START 23.6
HIERARCH ESO ISS PBLA13 END 24.5
HIERARCH ESO ISS PBL14 START 108.381
HIERARCH ESO ISS PBL14 END 110.029
HIERARCH ESO ISS PBLA14 START 57.258
HIERARCH ESO ISS PBLA14 END 57.812
HIERARCH ESO ISS PBL23 START 38.633
HIERARCH ESO ISS PBL23 END 39.022
HIERARCH ESO ISS PBLA23 START 32.7
HIERARCH ESO ISS PBLA23 END 33.6
HIERARCH ESO ISS PBL24 START 78.651
HIERARCH ESO ISS PBL24 END 79.78
HIERARCH ESO ISS PBLA24 START 80.968
HIERARCH ESO ISS PBLA24 END 81.101
HIERARCH ESO ISS PBL34 START 60.272
HIERARCH ESO ISS PBL34 END 60.678
HIERARCH ESO ISS PBLA34 START 109.543
HIERARCH ESO ISS PBLA34 END 109.411
HIERARCH ESO ISS AMBI TAU0 START 0.007763
HIERARCH ESO ISS AMBI TAU0 END 0.010574
HIERARCH ESO ISS AMBI TEMP 13.51
HIERARCH ESO ISS AMBI FWHM START 0.62
HIERARCH ESO ISS AMBI FWHM END 0.61