Exposure
ID
GRAVI.2022-11-11T06:49:33.497_1
Header ID
GRAVI.2022-11-11T06:49:33.497
Date updated
2022-11-11 07:05:28 UTC+0000
Release date
2023-11-11 07:05:28 UTC+0000
UTC Start
2022-11-11 06:49:33.497
UTC End
2022-11-11 06:55:33.497
MJD Start
59894.28441547
MJD End
59894.2885821367
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.004678
Ambient temperature (°C)
9.7
Seeing (arcsec)
0.53
Observation
ID
53119
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
39497
Name
Akn120
RA
79.049158
DEC
-0.1501
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 53.0040 53.2690 29.3000 29.8000
U1-U3 96.9970 97.5200 35.7000 36.2000
U1-U4 128.5640 129.0340 62.9350 63.0460
U2-U3 44.7360 44.9800 43.4000 43.8000
U2-U4 89.4240 89.4160 82.1260 82.1290
U3-U4 61.2510 60.9080 109.2820 109.3980
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 59894.28441547
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME Akn120
HIERARCH ESO INS SOBJ NAME Akn120
RA 79.049158
DEC -0.1501
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 53.004
HIERARCH ESO ISS PBL12 END 53.269
HIERARCH ESO ISS PBLA12 START 29.3
HIERARCH ESO ISS PBLA12 END 29.8
HIERARCH ESO ISS PBL13 START 96.997
HIERARCH ESO ISS PBL13 END 97.52
HIERARCH ESO ISS PBLA13 START 35.7
HIERARCH ESO ISS PBLA13 END 36.2
HIERARCH ESO ISS PBL14 START 128.564
HIERARCH ESO ISS PBL14 END 129.034
HIERARCH ESO ISS PBLA14 START 62.935
HIERARCH ESO ISS PBLA14 END 63.046
HIERARCH ESO ISS PBL23 START 44.736
HIERARCH ESO ISS PBL23 END 44.98
HIERARCH ESO ISS PBLA23 START 43.4
HIERARCH ESO ISS PBLA23 END 43.8
HIERARCH ESO ISS PBL24 START 89.424
HIERARCH ESO ISS PBL24 END 89.416
HIERARCH ESO ISS PBLA24 START 82.126
HIERARCH ESO ISS PBLA24 END 82.129
HIERARCH ESO ISS PBL34 START 61.251
HIERARCH ESO ISS PBL34 END 60.908
HIERARCH ESO ISS PBLA34 START 109.282
HIERARCH ESO ISS PBLA34 END 109.398
HIERARCH ESO ISS AMBI TAU0 START 0.004987
HIERARCH ESO ISS AMBI TAU0 END 0.004369
HIERARCH ESO ISS AMBI TEMP 9.7
HIERARCH ESO ISS AMBI FWHM START 0.54
HIERARCH ESO ISS AMBI FWHM END 0.52