Exposure
ID
GRAVI.2023-12-28T05:40:57.473_1
Header ID
GRAVI.2023-12-28T05:40:57.473
Date updated
2023-12-28 05:55:30 UTC+0000
Release date
2024-12-28 05:55:29 UTC+0000
UTC Start
2023-12-28 05:40:57.473
UTC End
2023-12-28 05:46:57.473
MJD Start
60306.23677631
MJD End
60306.2409429767
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0046065
Ambient temperature (°C)
12.91
Seeing (arcsec)
0.785
Observation
ID
58073
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
43006
Name
Akn120
RA
79.049511
DEC
-0.14995
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 56.3590 56.4270 34.9000 35.0000
U1-U3 102.4240 102.4340 39.8000 39.8000
U1-U4 124.7740 123.8310 62.1110 61.8840
U2-U3 46.5230 46.4490 45.8000 45.7000
U2-U4 78.9580 77.7860 81.1460 81.0150
U3-U4 49.0590 48.0750 114.4210 114.9580
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 60306.23677631
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME Mrk 1095
HIERARCH ESO INS SOBJ NAME Akn120
RA 79.049511
DEC -0.14995
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 56.359
HIERARCH ESO ISS PBL12 END 56.427
HIERARCH ESO ISS PBLA12 START 34.9
HIERARCH ESO ISS PBLA12 END 35.0
HIERARCH ESO ISS PBL13 START 102.424
HIERARCH ESO ISS PBL13 END 102.434
HIERARCH ESO ISS PBLA13 START 39.8
HIERARCH ESO ISS PBLA13 END 39.8
HIERARCH ESO ISS PBL14 START 124.774
HIERARCH ESO ISS PBL14 END 123.831
HIERARCH ESO ISS PBLA14 START 62.111
HIERARCH ESO ISS PBLA14 END 61.884
HIERARCH ESO ISS PBL23 START 46.523
HIERARCH ESO ISS PBL23 END 46.449
HIERARCH ESO ISS PBLA23 START 45.8
HIERARCH ESO ISS PBLA23 END 45.7
HIERARCH ESO ISS PBL24 START 78.958
HIERARCH ESO ISS PBL24 END 77.786
HIERARCH ESO ISS PBLA24 START 81.146
HIERARCH ESO ISS PBLA24 END 81.015
HIERARCH ESO ISS PBL34 START 49.059
HIERARCH ESO ISS PBL34 END 48.075
HIERARCH ESO ISS PBLA34 START 114.421
HIERARCH ESO ISS PBLA34 END 114.958
HIERARCH ESO ISS AMBI TAU0 START 0.00446
HIERARCH ESO ISS AMBI TAU0 END 0.004753
HIERARCH ESO ISS AMBI TEMP 12.91
HIERARCH ESO ISS AMBI FWHM START 0.78
HIERARCH ESO ISS AMBI FWHM END 0.79