Exposure
ID
GRAVI.2023-12-30T01:52:13.366_1
Header ID
GRAVI.2023-12-30T01:52:13.366
Date updated
2023-12-30 02:05:49 UTC+0000
Release date
2024-12-30 02:05:49 UTC+0000
UTC Start
2023-12-30 01:52:13.366
UTC End
2023-12-30 01:58:13.366
MJD Start
60308.07793248
MJD End
60308.0820991467
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0100825
Ambient temperature (°C)
13.54
Seeing (arcsec)
0.58
Observation
ID
58095
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
43019
Name
Akn120
RA
79.049256
DEC
-0.15004
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 48.4360 48.6800 17.2000 18.1000
U1-U3 86.5890 87.2230 24.5000 25.4000
U1-U4 110.0980 111.7020 57.8350 58.3550
U2-U3 39.0380 39.4290 33.6000 34.5000
U2-U4 79.8260 80.9000 81.1060 81.2290
U3-U4 60.6950 61.0610 109.4050 109.2880
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 60308.07793248
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME Mrk 1095
HIERARCH ESO INS SOBJ NAME Akn120
RA 79.049256
DEC -0.15004
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 48.436
HIERARCH ESO ISS PBL12 END 48.68
HIERARCH ESO ISS PBLA12 START 17.2
HIERARCH ESO ISS PBLA12 END 18.1
HIERARCH ESO ISS PBL13 START 86.589
HIERARCH ESO ISS PBL13 END 87.223
HIERARCH ESO ISS PBLA13 START 24.5
HIERARCH ESO ISS PBLA13 END 25.4
HIERARCH ESO ISS PBL14 START 110.098
HIERARCH ESO ISS PBL14 END 111.702
HIERARCH ESO ISS PBLA14 START 57.835
HIERARCH ESO ISS PBLA14 END 58.355
HIERARCH ESO ISS PBL23 START 39.038
HIERARCH ESO ISS PBL23 END 39.429
HIERARCH ESO ISS PBLA23 START 33.6
HIERARCH ESO ISS PBLA23 END 34.5
HIERARCH ESO ISS PBL24 START 79.826
HIERARCH ESO ISS PBL24 END 80.9
HIERARCH ESO ISS PBLA24 START 81.106
HIERARCH ESO ISS PBLA24 END 81.229
HIERARCH ESO ISS PBL34 START 60.695
HIERARCH ESO ISS PBL34 END 61.061
HIERARCH ESO ISS PBLA34 START 109.405
HIERARCH ESO ISS PBLA34 END 109.288
HIERARCH ESO ISS AMBI TAU0 START 0.010574
HIERARCH ESO ISS AMBI TAU0 END 0.009591
HIERARCH ESO ISS AMBI TEMP 13.54
HIERARCH ESO ISS AMBI FWHM START 0.61
HIERARCH ESO ISS AMBI FWHM END 0.55