Exposure
ID
GRAVI.2022-11-15T06:40:53.986_1
Header ID
GRAVI.2022-11-15T06:40:53.986
Date updated
2022-11-15 06:50:56 UTC+0000
Release date
2023-11-15 06:50:56 UTC+0000
UTC Start
2022-11-15 06:40:53.986
UTC End
2022-11-15 06:46:53.986
MJD Start
59898.27840261
MJD End
59898.2825692767
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0182905
Ambient temperature (°C)
15.46
Seeing (arcsec)
0.395
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 53.3010 53.5570 29.8000 30.3000
U1-U3 97.5830 98.0800 36.2000 36.6000
U1-U4 129.0870 129.4670 63.0580 63.1470
U2-U3 45.0090 45.2350 43.8000 44.1000
U2-U4 89.4100 89.3260 82.1280 82.1250
U3-U4 60.8630 60.4760 109.4130 109.5450
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 59898.27840261
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 53.301
HIERARCH ESO ISS PBL12 END 53.557
HIERARCH ESO ISS PBLA12 START 29.8
HIERARCH ESO ISS PBLA12 END 30.3
HIERARCH ESO ISS PBL13 START 97.583
HIERARCH ESO ISS PBL13 END 98.08
HIERARCH ESO ISS PBLA13 START 36.2
HIERARCH ESO ISS PBLA13 END 36.6
HIERARCH ESO ISS PBL14 START 129.087
HIERARCH ESO ISS PBL14 END 129.467
HIERARCH ESO ISS PBLA14 START 63.058
HIERARCH ESO ISS PBLA14 END 63.147
HIERARCH ESO ISS PBL23 START 45.009
HIERARCH ESO ISS PBL23 END 45.235
HIERARCH ESO ISS PBLA23 START 43.8
HIERARCH ESO ISS PBLA23 END 44.1
HIERARCH ESO ISS PBL24 START 89.41
HIERARCH ESO ISS PBL24 END 89.326
HIERARCH ESO ISS PBLA24 START 82.128
HIERARCH ESO ISS PBLA24 END 82.125
HIERARCH ESO ISS PBL34 START 60.863
HIERARCH ESO ISS PBL34 END 60.476
HIERARCH ESO ISS PBLA34 START 109.413
HIERARCH ESO ISS PBLA34 END 109.545
HIERARCH ESO ISS AMBI TAU0 START 0.01868
HIERARCH ESO ISS AMBI TAU0 END 0.017901
HIERARCH ESO ISS AMBI TEMP 15.46
HIERARCH ESO ISS AMBI FWHM START 0.41
HIERARCH ESO ISS AMBI FWHM END 0.38