Exposure
ID
GRAVI.2022-11-15T07:07:03.052_1
Header ID
GRAVI.2022-11-15T07:07:03.052
Date updated
2022-11-15 07:20:27 UTC+0000
Release date
2023-11-15 07:20:27 UTC+0000
UTC Start
2022-11-15 07:07:03.052
UTC End
2022-11-15 07:13:03.052
MJD Start
59898.2965631
MJD End
59898.3007297667
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0162505
Ambient temperature (°C)
15.2
Seeing (arcsec)
0.41
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 54.3150 54.5400 31.7000 32.0000
U1-U3 99.4920 99.8920 37.7000 38.0000
U1-U4 130.1530 130.2080 63.3110 63.3270
U2-U3 45.8420 46.0010 44.9000 45.1000
U2-U4 88.6290 88.2680 82.0740 82.0450
U3-U4 59.0000 58.4470 110.0660 110.2680
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 59898.2965631
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 54.315
HIERARCH ESO ISS PBL12 END 54.54
HIERARCH ESO ISS PBLA12 START 31.7
HIERARCH ESO ISS PBLA12 END 32.0
HIERARCH ESO ISS PBL13 START 99.492
HIERARCH ESO ISS PBL13 END 99.892
HIERARCH ESO ISS PBLA13 START 37.7
HIERARCH ESO ISS PBLA13 END 38.0
HIERARCH ESO ISS PBL14 START 130.153
HIERARCH ESO ISS PBL14 END 130.208
HIERARCH ESO ISS PBLA14 START 63.311
HIERARCH ESO ISS PBLA14 END 63.327
HIERARCH ESO ISS PBL23 START 45.842
HIERARCH ESO ISS PBL23 END 46.001
HIERARCH ESO ISS PBLA23 START 44.9
HIERARCH ESO ISS PBLA23 END 45.1
HIERARCH ESO ISS PBL24 START 88.629
HIERARCH ESO ISS PBL24 END 88.268
HIERARCH ESO ISS PBLA24 START 82.074
HIERARCH ESO ISS PBLA24 END 82.045
HIERARCH ESO ISS PBL34 START 59.0
HIERARCH ESO ISS PBL34 END 58.447
HIERARCH ESO ISS PBLA34 START 110.066
HIERARCH ESO ISS PBLA34 END 110.268
HIERARCH ESO ISS AMBI TAU0 START 0.015675
HIERARCH ESO ISS AMBI TAU0 END 0.016826
HIERARCH ESO ISS AMBI TEMP 15.2
HIERARCH ESO ISS AMBI FWHM START 0.37
HIERARCH ESO ISS AMBI FWHM END 0.45