Exposure
ID
GRAVI.2023-12-29T04:45:08.649_1
Header ID
GRAVI.2023-12-29T04:45:08.649
Date updated
2023-12-29 05:00:35 UTC+0000
Release date
2024-12-29 05:00:35 UTC+0000
UTC Start
2023-12-29 04:45:08.649
UTC End
2023-12-29 04:51:08.649
MJD Start
60307.19801677
MJD End
60307.2021834367
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.009011
Ambient temperature (°C)
12.86
Seeing (arcsec)
0.53
Observation
ID
58082
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
43012
Name
Akn120
RA
79.049539
DEC
-0.14996
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 55.2950 55.4700 33.3000 33.6000
U1-U3 101.1500 101.4170 38.9000 39.1000
U1-U4 129.7040 129.3810 63.2310 63.1620
U2-U3 46.4450 46.5200 45.7000 45.8000
U2-U4 86.3240 85.6510 81.8810 81.8200
U3-U4 56.0280 55.2960 111.2000 111.4980
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 60307.19801677
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME Mrk 1095
HIERARCH ESO INS SOBJ NAME Akn120
RA 79.049539
DEC -0.14996
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 55.295
HIERARCH ESO ISS PBL12 END 55.47
HIERARCH ESO ISS PBLA12 START 33.3
HIERARCH ESO ISS PBLA12 END 33.6
HIERARCH ESO ISS PBL13 START 101.15
HIERARCH ESO ISS PBL13 END 101.417
HIERARCH ESO ISS PBLA13 START 38.9
HIERARCH ESO ISS PBLA13 END 39.1
HIERARCH ESO ISS PBL14 START 129.704
HIERARCH ESO ISS PBL14 END 129.381
HIERARCH ESO ISS PBLA14 START 63.231
HIERARCH ESO ISS PBLA14 END 63.162
HIERARCH ESO ISS PBL23 START 46.445
HIERARCH ESO ISS PBL23 END 46.52
HIERARCH ESO ISS PBLA23 START 45.7
HIERARCH ESO ISS PBLA23 END 45.8
HIERARCH ESO ISS PBL24 START 86.324
HIERARCH ESO ISS PBL24 END 85.651
HIERARCH ESO ISS PBLA24 START 81.881
HIERARCH ESO ISS PBLA24 END 81.82
HIERARCH ESO ISS PBL34 START 56.028
HIERARCH ESO ISS PBL34 END 55.296
HIERARCH ESO ISS PBLA34 START 111.2
HIERARCH ESO ISS PBLA34 END 111.498
HIERARCH ESO ISS AMBI TAU0 START 0.010369
HIERARCH ESO ISS AMBI TAU0 END 0.007653
HIERARCH ESO ISS AMBI TEMP 12.86
HIERARCH ESO ISS AMBI FWHM START 0.45
HIERARCH ESO ISS AMBI FWHM END 0.61