Exposure
ID
GRAVI.2022-11-15T07:37:36.129_1
Header ID
GRAVI.2022-11-15T07:37:36.129
Date updated
2022-11-15 07:56:30 UTC+0000
Release date
2023-11-15 07:56:30 UTC+0000
UTC Start
2022-11-15 07:37:36.129
UTC End
2022-11-15 07:43:36.129
MJD Start
59898.31777927
MJD End
59898.3219459367
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0165395
Ambient temperature (°C)
15.23
Seeing (arcsec)
0.44
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 55.3080 55.4820 33.3000 33.6000
U1-U3 101.1720 101.4350 38.9000 39.1000
U1-U4 129.6820 129.3540 63.2240 63.1540
U2-U3 46.4510 46.5250 45.7000 45.8000
U2-U4 86.2750 85.6000 81.8740 81.8130
U3-U4 55.9720 55.2410 111.2200 111.5180
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 59898.31777927
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 55.308
HIERARCH ESO ISS PBL12 END 55.482
HIERARCH ESO ISS PBLA12 START 33.3
HIERARCH ESO ISS PBLA12 END 33.6
HIERARCH ESO ISS PBL13 START 101.172
HIERARCH ESO ISS PBL13 END 101.435
HIERARCH ESO ISS PBLA13 START 38.9
HIERARCH ESO ISS PBLA13 END 39.1
HIERARCH ESO ISS PBL14 START 129.682
HIERARCH ESO ISS PBL14 END 129.354
HIERARCH ESO ISS PBLA14 START 63.224
HIERARCH ESO ISS PBLA14 END 63.154
HIERARCH ESO ISS PBL23 START 46.451
HIERARCH ESO ISS PBL23 END 46.525
HIERARCH ESO ISS PBLA23 START 45.7
HIERARCH ESO ISS PBLA23 END 45.8
HIERARCH ESO ISS PBL24 START 86.275
HIERARCH ESO ISS PBL24 END 85.6
HIERARCH ESO ISS PBLA24 START 81.874
HIERARCH ESO ISS PBLA24 END 81.813
HIERARCH ESO ISS PBL34 START 55.972
HIERARCH ESO ISS PBL34 END 55.241
HIERARCH ESO ISS PBLA34 START 111.22
HIERARCH ESO ISS PBLA34 END 111.518
HIERARCH ESO ISS AMBI TAU0 START 0.01883
HIERARCH ESO ISS AMBI TAU0 END 0.014249
HIERARCH ESO ISS AMBI TEMP 15.23
HIERARCH ESO ISS AMBI FWHM START 0.46
HIERARCH ESO ISS AMBI FWHM END 0.42