Exposure
ID
GRAVI.2023-12-30T02:18:13.432_1
Header ID
GRAVI.2023-12-30T02:18:13.432
Date updated
2023-12-30 02:30:52 UTC+0000
Release date
2023-12-30 02:18:13 UTC+0000
UTC Start
2023-12-30 02:18:13.432
UTC End
2023-12-30 02:24:13.432
MJD Start
60308.0959888
MJD End
60308.1001554667
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.009267
Ambient temperature (°C)
13.0
Seeing (arcsec)
0.66
Observation
ID
58096
Category
calibrator
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
43020
Name
HD34939
RA
80.15592
DEC
-11.23225
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 53.5160 53.6750 18.6000 19.4000
U1-U3 96.2780 96.6800 25.2000 26.0000
U1-U4 121.0490 122.0880 55.1880 55.8320
U2-U3 43.5590 43.8050 33.3000 34.1000
U2-U4 84.3630 85.1170 77.4200 77.8390
U3-U4 61.1040 61.4190 107.1450 107.3600
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 110.23XR.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60308.0959888
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD34939
HIERARCH ESO INS SOBJ NAME HD34939
RA 80.15592
DEC -11.23225
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 53.516
HIERARCH ESO ISS PBL12 END 53.675
HIERARCH ESO ISS PBLA12 START 18.6
HIERARCH ESO ISS PBLA12 END 19.4
HIERARCH ESO ISS PBL13 START 96.278
HIERARCH ESO ISS PBL13 END 96.68
HIERARCH ESO ISS PBLA13 START 25.2
HIERARCH ESO ISS PBLA13 END 26.0
HIERARCH ESO ISS PBL14 START 121.049
HIERARCH ESO ISS PBL14 END 122.088
HIERARCH ESO ISS PBLA14 START 55.188
HIERARCH ESO ISS PBLA14 END 55.832
HIERARCH ESO ISS PBL23 START 43.559
HIERARCH ESO ISS PBL23 END 43.805
HIERARCH ESO ISS PBLA23 START 33.3
HIERARCH ESO ISS PBLA23 END 34.1
HIERARCH ESO ISS PBL24 START 84.363
HIERARCH ESO ISS PBL24 END 85.117
HIERARCH ESO ISS PBLA24 START 77.42
HIERARCH ESO ISS PBLA24 END 77.839
HIERARCH ESO ISS PBL34 START 61.104
HIERARCH ESO ISS PBL34 END 61.419
HIERARCH ESO ISS PBLA34 START 107.145
HIERARCH ESO ISS PBLA34 END 107.36
HIERARCH ESO ISS AMBI TAU0 START 0.007895
HIERARCH ESO ISS AMBI TAU0 END 0.010639
HIERARCH ESO ISS AMBI TEMP 13.0
HIERARCH ESO ISS AMBI FWHM START 0.69
HIERARCH ESO ISS AMBI FWHM END 0.63