Exposure
ID
GRAVI.2023-12-28T05:08:30.390_1
Header ID
GRAVI.2023-12-28T05:08:30.390
Date updated
2023-12-28 05:25:41 UTC+0000
Release date
2024-12-28 05:25:41 UTC+0000
UTC Start
2023-12-28 05:08:30.390
UTC End
2023-12-28 05:14:30.390
MJD Start
60306.21424063
MJD End
60306.2184072967
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0069055
Ambient temperature (°C)
13.43
Seeing (arcsec)
0.525
Observation
ID
58072
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
43005
Name
Akn120
RA
79.049517
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 55.7940 55.9320 34.1000 34.3000
U1-U3 101.8730 102.0460 39.4000 39.6000
U1-U4 128.4620 127.8980 62.9590 62.8340
U2-U3 46.6190 46.6380 45.9000 45.9000
U2-U4 84.0540 83.1850 81.6680 81.5840
U3-U4 53.6700 52.8330 112.1870 112.5610
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 60306.21424063
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME Mrk 1095
HIERARCH ESO INS SOBJ NAME Akn120
RA 79.049517
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 55.794
HIERARCH ESO ISS PBL12 END 55.932
HIERARCH ESO ISS PBLA12 START 34.1
HIERARCH ESO ISS PBLA12 END 34.3
HIERARCH ESO ISS PBL13 START 101.873
HIERARCH ESO ISS PBL13 END 102.046
HIERARCH ESO ISS PBLA13 START 39.4
HIERARCH ESO ISS PBLA13 END 39.6
HIERARCH ESO ISS PBL14 START 128.462
HIERARCH ESO ISS PBL14 END 127.898
HIERARCH ESO ISS PBLA14 START 62.959
HIERARCH ESO ISS PBLA14 END 62.834
HIERARCH ESO ISS PBL23 START 46.619
HIERARCH ESO ISS PBL23 END 46.638
HIERARCH ESO ISS PBLA23 START 45.9
HIERARCH ESO ISS PBLA23 END 45.9
HIERARCH ESO ISS PBL24 START 84.054
HIERARCH ESO ISS PBL24 END 83.185
HIERARCH ESO ISS PBLA24 START 81.668
HIERARCH ESO ISS PBLA24 END 81.584
HIERARCH ESO ISS PBL34 START 53.67
HIERARCH ESO ISS PBL34 END 52.833
HIERARCH ESO ISS PBLA34 START 112.187
HIERARCH ESO ISS PBLA34 END 112.561
HIERARCH ESO ISS AMBI TAU0 START 0.006287
HIERARCH ESO ISS AMBI TAU0 END 0.007524
HIERARCH ESO ISS AMBI TEMP 13.43
HIERARCH ESO ISS AMBI FWHM START 0.57
HIERARCH ESO ISS AMBI FWHM END 0.48