An overview of the radio observations during July 2020 is given.
The graphs show both the daily totals (Figure 1) and the hourly numbers (Figure 2) of “all” reflections counted automatically, and of manually counted “overdense” reflections, overdense reflections longer than 10 seconds and longer than 1 minute, as observed here at Kampenhout (BE) on the frequency of our VVS-beacon (49.99 MHz) during the month of July 2020.
The hourly numbers, for echoes shorter than 1 minute, are weighted averages derived from:
The automatic counts were sometimes complicated by local interference and strong unidentified noise. Lightning activity was only recorded during the last hours of July 31. Most automatic counting errors were corrected manually.
There were no real eye-casting peaks, but the overall activity remained high and increased as expected towards the end of the month, mainly due to the activity of the Southern Delta Aquariids (SDA) and some Perseids, with a number of very strong reflections. There were, however, numerous smaller showers in the course of the month, as shown by the counts of the “overdense” reflections.
A selection of some interesting reflections during this month is also included (Figures 3, 4, 5, 6 , 7, 8, 9, 10, 11, 12, 13, 14 and 15). It is striking that the long reflections are often accompanied by a number of underdense meteors.
If you are interested in the actual figures, please send me an e-mail: felix.verbelen at skynet.be.
Figure 1 – The daily totals of “all” reflections counted automatically, and of manually counted “overdense” reflections, overdense reflections longer than 10 seconds and longer than 1 minute, as observed here at Kampenhout (BE) on the frequency of our VVS-beacon (49.99 MHz) during July 2020.
Figure 2 – The hourly numbers of “all” reflections counted automatically, and of manually counted “overdense” reflections, overdense reflections longer than 10 seconds and longer than 1 minute, as observed here at Kampenhout (BE) on the frequency of our VVS-beacon (49.99 MHz) during July 2020.
Figure 3 – 2020 July 07 at 04h45m UT.
Figure 4 – 2020 July 13 at 01h55m UT.
Figure 5 – 2020 July 14 at 05h05m UT.
Figure 6 – 2020 July 15 at 00h05m UT.
Figure 7 – 2020 July 17 at 05h40m UT.
Figure 8 – 2020 July 18 at 23h35m UT.
Figure 9 – 2020 July 23 at 03h10m UT.
Figure 10 – 2020 July 26 at 04h30m UT.
Figure 11 – 2020 July 26 at 21h10m UT.
Figure 12 – 2020 July 27 at 00h05m UT.
Figure 13 – 2020 July 28 at 04h45m UT.
Figure 14 – 2020 July 29 at 04h50m UT.
Figure 15 – 2020 July 31 at 10h05m UT.
