Exposure
ID
GRAVI.2022-11-15T07:59:36.185_1
Header ID
GRAVI.2022-11-15T07:59:36.185
Date updated
2022-11-15 08:15:42 UTC+0000
Release date
2023-11-15 08:15:42 UTC+0000
UTC Start
2022-11-15 07:59:36.185
UTC End
2022-11-15 08:05:36.185
MJD Start
59898.3330577
MJD End
59898.3372243667
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.017619
Ambient temperature (°C)
15.21
Seeing (arcsec)
0.38
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 55.8610 55.9920 34.2000 34.4000
U1-U3 101.9590 102.1160 39.5000 39.6000
U1-U4 128.2040 127.6080 62.9030 62.7700
U2-U3 46.6300 46.6410 45.9000 45.9000
U2-U4 83.6500 82.7570 81.6300 81.5420
U3-U4 53.2770 52.4300 112.3620 112.7470
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 59898.3330577
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 55.861
HIERARCH ESO ISS PBL12 END 55.992
HIERARCH ESO ISS PBLA12 START 34.2
HIERARCH ESO ISS PBLA12 END 34.4
HIERARCH ESO ISS PBL13 START 101.959
HIERARCH ESO ISS PBL13 END 102.116
HIERARCH ESO ISS PBLA13 START 39.5
HIERARCH ESO ISS PBLA13 END 39.6
HIERARCH ESO ISS PBL14 START 128.204
HIERARCH ESO ISS PBL14 END 127.608
HIERARCH ESO ISS PBLA14 START 62.903
HIERARCH ESO ISS PBLA14 END 62.77
HIERARCH ESO ISS PBL23 START 46.63
HIERARCH ESO ISS PBL23 END 46.641
HIERARCH ESO ISS PBLA23 START 45.9
HIERARCH ESO ISS PBLA23 END 45.9
HIERARCH ESO ISS PBL24 START 83.65
HIERARCH ESO ISS PBL24 END 82.757
HIERARCH ESO ISS PBLA24 START 81.63
HIERARCH ESO ISS PBLA24 END 81.542
HIERARCH ESO ISS PBL34 START 53.277
HIERARCH ESO ISS PBL34 END 52.43
HIERARCH ESO ISS PBLA34 START 112.362
HIERARCH ESO ISS PBLA34 END 112.747
HIERARCH ESO ISS AMBI TAU0 START 0.016253
HIERARCH ESO ISS AMBI TAU0 END 0.018985
HIERARCH ESO ISS AMBI TEMP 15.21
HIERARCH ESO ISS AMBI FWHM START 0.38
HIERARCH ESO ISS AMBI FWHM END 0.38