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Hi ?ilvis, That is an interesting group of measurements. ?I understand there will reduction in electrons during an eclipse. ?So, are the electron currents at satellite altitudes affecting the

Thanks for the interesting lecture! My 2cents: there was a total eclipse in July 2009 and then I thought what is happening with Earth magnetic field during the event. So I made an screenshot from NOAA

The link has been mailed out.? Let me know if you have not received it....... -- ???? Paul Hearn? ??? paul@... ??? ?RA Section Director? ???

Sorry, just saw the 19:00 BST tutorial starts. OK for my time zone. Thanks

Interested depending on the Mon. time of the tutorials. Thanks

--------------------------------------------------------------------- Data processing and visualisation of muon data using the Raspberry Pi

Today's screenshots are from Martin near Salisbury. The left hand screenshot is from Martin's own receiver system while the others are from the live stream. They show a tail echo lasting ten seconds

We are pleased to welcome back Whit Reeve, a long time supporter of these seminars. 'October 14, 2023 Solar Eclipse ~ Effects on VLF Radio Propagation ~ Observed in Alaska USA' ~ Whitham D. Reeve.

Latest map of Milky Way in hydrogen line with Ptarmigan Triffid Military Dipole Array: https://astronomy.me.uk/latest-milky-way-map-from-lro-1-4-2024 Andy

There was another set of weird echos earlier.

Here are several interesting echoes. Starting with the echo bottom left. This was seen by NW Hampshire with horizontal polarisation and by Armagh but not by NW Hampshire with vertical polarisation or

Although fairly quiet an average of two or more echoes per minute have been seen most mornings lately. In today's screenshot the NW Hampshire H Pol receiver sees two echoes only one of which is seen

Here are two meteor echoes seen by NW Hampshire along with the full bandwidth horizontal lines which are lightning strikes from a local Thunderstorm unseen by the other receivers. Note that the

An early start enabled me to capture some interesting echoes this morning while working on other things. You can capture your own observations at https://ukmeteorbeacon.org/beaconclient/ This

Today's screenshot shows what are most likely the same echo viewed from three different locations. The vertical scales are not precisely aligned due to processing delays, a problem which can be

There is also a difference in the electric field strength between a circular polarisation (CP) and linear incident radiation of a factor of two.? For the same transmitted power a meteoroid trail

Circular Polarisation is used to ensure that if the reflecting target has any polarising properties as a wire or cylinder with a diameter small compared to the illuminating wavelength would, that some

Why is th tx antenna CP? Have you considered a GPV? ?It may help reducing direct wave if horizontal polarised Rex antennas are used.

yes it's difficult thinking about what the polarisation is the meteoroid ?and then how this is seen at the receiver. ?One needs to consider azimuth and elevation angles Are these the azimuthal

Hello Mike The X and Y plots look similar but I would not claim that we are able to make any precise measurements of polarisation, just a strong indication. Another problem is that it is very