Meteors Members: Ahn Soo Young Jee Myeong Keun Jee Myeong Keun Diego irola Diego irola Slaven Miak Slaven Miak Team leader: Nikola Strah Scientific advisors: Goran Zgrabli Izidor Pelaji Nikola Bilikov Izidor Pelaji Nikola Bilikov Goals Meteor observation RadioVideoVisualELF Meteors: -small particles of dust -up to 50m in diameter -circle the Sun meteor streams Background Radio observation Goal: -detect a signal from a station far far away (more than 800 km) (forward scattering) (forward scattering) -record the signal through the night -analyze the recorded data Meteor Group Lab TV station Prague Ionization trail Equipment - Yagi antenna - iCom IC-PCR1000 receiver - Computer and Humanware Details iCom IC-PCR1000 receiver Frequency MHz TV station in Prague, output power 150 kW, distance 544 km, video and audio signal recorded PC computer Pentium 3 Data recording, reduction and analysis performed with CoolEdit & Audacity software, sampling rate Hz Yagi antenna in the dark Digging the hole for the antenna Results 13h of raw data to be processed 10 minutes of actual meteor recordings Visual observation Plan: -gather few hours of observations -send report to IMO -calculate ZHR Results - Few hours of observation - Reports sent to IMO - ZHR calculated for all observations - Observed showers: - Perseides - Southern Aquarides - Cygnides ZHR:- Cygnides- 1.day 3 2.day 40 2.day 40 3.day 41 3.day 41 ELF Goals: Record a meteor signal in ELF band ( Hz)Record a meteor signal in ELF band ( Hz) Equipment ELF orb 50 Hz filter DC filter and appropriate software NI DAQmx SCB-68 and appropriate software Schematics Electrometer 50 Hz cutoff 150 Hz cutoff Low pass DC Filter NI DAQmx SCB-68 PC with acquisition software made in LabView 7.1 Results equipment testing Signal from the electrometer Signal from the electrometer when electrometer was grounded Without the grounding With the grounding - We used Slaven for grounding purposes Signal recorded FFT calculated using LabView programmed software and CoolEdit Frequency Analysis Video Goal: Simultaniousley record the sky with video camera combined with radio & visual observation for analisys.Simultaniousley record the sky with video camera combined with radio & visual observation for analisys. Equipment Watec WAT-902H CCD camera DC power supply- founded and thoroughly tested Video capture card MetRec and Meteoder software Results - Video capture card (Meteor II) doesnt work - Camera works - DC power supply is operating First light from camera- tested on video monitor from the control room of the observatory THE END Thank you for your attention! Any questions?