d id 2011 b th lldraconids 2011 by the all-sky camera amos · stations • imtn - it li m t d tle t...
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D id 2011 b th ll kDraconids 2011 by the all-skycamera AMOS
L. Kornoš, J. Tóth, Š. Gajdoš, J. Villági, j gP. Zigo, D. Kalmančok, F. Ďuriš
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AMOS All sky Meteor Orbit SystemAMOS - All-sky Meteor Orbit System
• from AGO CU
S G• Sigma DG Fisheye 15mm, F2.8
• Image intensifier XX1332, Photonis
• Meopta Video Opticon 1.4 / 16
• DMK 41BU02 ImagingSource• DMK 41BU02, ImagingSource
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ITMN, PFN, CEMeNt, SVMN - 9 stations
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StationsStations
IMTN It li M t d TLE t k (5 t ti )• IMTN - Italian Meteor and TLE network (5 stations)
• PFN - Polish Fireball Network / Pracownia Komet i Meteorów, PKiM(2 stations)
• CEMeNt - Central European Meteor Network, Czech and Slovak AA
(1 station)
• SVMN - Slovak VideoMeteor Network, CU (1 station), ( )
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Bettola, ItalyG jd š Vilá i (SVMN) Piffl (CEM Nt)Gajdoš, Világi (SVMN), Piffl (CEMeNt)
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Processing of dataProcessing of data
f i UFO T l• most of stations UFO Tools• two Polish stations MetRec – then converted to UFO format
bit t d b UFOO bit• orbits computed by UFOOrbit
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Preliminary resultsPreliminary results
• 62 Dra identified 17:56 - 23:22 UT• radiant elevation 68 - 29 deg
• 43 Dra with sufficient precision
• 19 excluded• convergence angle• small number of meteor positions• small number of meteor positions• other astrometrical issues
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Velocity derivationVelocity derivation
t f t ti d d l ti• strong fragmentation and deceleration• measurement of velocity problem
• assumed initial velocity 23.57 km/s• by Koten et al. (2007)
photographic fireball in 2005• photographic fireball in 2005• assumption is supported by 10 well Dra
in our records
• more detail analysis will be done
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Mean orbit of Draconids from 9 stations (Italy)Mean orbit of Draconids from 9 stations (Italy)
a a (AU)(AU) q (AU)q (AU) ee i (i (°°)) ωω ((°°)) ΩΩ ((°°)) αα ((°°)) δδ ((°°))( )( ) q ( )q ( ) (( )) (( )) (( )) (( )) (( ))
Mean Mean valuevalue
3.58 0.9964 0.720 31.70 173.51 194.944 -- 195.167
263.25 55.61
stdstd ± 0.29 ± 0.001 ± 0.023 ± 0.34 ± 1.10 ± 1.47 ± 1.00
Comet 21P 3.52 1.0320 0.707 31.91 172.57 195.403 263.20 55.80
Comet 21P integrated from epoch 1900 to epoch of observation Orbit from JPLobservation. Orbit from JPL.
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Beginning and terminal heightsBeginning and terminal heights
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Ground observation from KirunaGround observation from Kiruna
h d fi k b d f Ki i (AMOS)• the expected first peak observed from Kiruna airport (AMOS)• time interval 17:00 - 18:28 UT
• 16 Draconids and 5 sporadic meteors• no second-station meteor in the Swedish ALIS cameras of Aurora
R hResearch
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Airborne observationKiruna, Sweden, Oktober 8th, 2011
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Airborne observationAirborne observation
ti i t l 19 15 21 44 UT• time interval 19:15 - 21:44 UT• blackout between 20:12 - 20:28
UT
• turbulence caused the movement of the sky background• 2 min clips + break to save
• AMOS contains also the imageAMOS contains also the image intensifer • high background - full Moon,
aurora (after 21 UT)aurora (after 21 UT)
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Processing of dataProcessing of data• detection of meteors manually
• high background, sw did not work• HandyAvi (http://www.azcendant.com/)• UFOCapture (SonotaCo, (2009)
• short clips containing only meteors• 1 sec - meteor - 2 sec1 sec meteor 2 sec• Boilsoft Video Splitter
(http://www.boilsoft.com/videosplitter/)
• astrometry by UFOAnalyzer• stacked image• one frame Virtual Dub software• one frame - Virtual-Dub software
(http://www.virtualdub.org/)• actual position of camera - airplane
from GPS datafrom GPS data
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Preliminary resultsPreliminary results
h 250 D id d d b AMOS• more than 250 Draconids recorded by AMOS camera
• brightness from -3 to +3 mag
• astrometric data corrected • precession, nutation, aberration• to join with France / Safire aircraft• compute orbits
• activity profile - 6 min. time interval• influenced due to aurora phenomena,
mainly after 21 UTmainly after 21 UT• ZHR could not be derived
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Activity profile from airborne observationActivity profile from airborne observation
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Thank you