Results of Positional and Photometric Measure- Ments of Meteor Trajectories Observed in Mykolaiv 2017-2018

Abstract

Regular meteor observation using TV CCD unintensified techniques was started in 2011 in RI «Mykolaiv astronomical observatory» (RI MAO). The method of meteor registration is based on using "trackand-stack" technique for obtaining frames with reference stars and online meteor detection software developed at RI NAO. The main accent of the research is made on precise astrometry and meteoroid orbits calculation. New observational campaign with baselines 11.7 and 100 km was started in 2017-2018 in collaboration with Astronomical Observatory of the I.I. Mechnikov Odessa National University. Eight telescopes with narrow field lens (f=50 mm, f/1.2) were installed in Mykolaiv and Odessa. More than 3000 single station meteors and 221 double station meteors were detected during 2017-2018. Uncertainties of meteor trajectory and orbital parameters are calculated using Monte Carlo method. Catalog of meteor trajectory positions and photometric parameters has created. Standard deviation of approximation of a meteoric trajectory in a large circle is (15-20)". Kinematic parameters of atmospheric meteoric trajectories and elements of heliocentric orbits for 3 meteors were calculated based on the results of television observations with cameras with a field of view <10° at a baseline distance 100 km. The average uncertainty of visible radiant estimation is in (0.3-0.7)º with baseline 100 km. The geocentric velocity estimation uncertainty is 0.5 km/s, elevation uncertainty is 50-150 m.

Investigation of the Photometric System of the Meteor Tv CCD Cameras

“…First results obtained with these telescopes are described in Kulichenko et al, 2019. Telescopes equipped with broadband Cokin filters P050 (cyan) and P003 (red) hereinafter referred to as blue and red bands.…”

“…Telescopes equipped with broadband Cokin filters P050 (cyan) and P003 (red) hereinafter referred to as blue and red bands. Observations are provided using track-and-stack technique for obtaining frames with reference stars (Kulichenko et al, 2015). Cameras work in the interlace mode (50 fps) and number of accumulated frames is 500 (10 s).…”