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A busy night for Perseids
http://www.boltonastro.co.uk/forums/viewtopic.php?f=1&t=952
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Author:  rwilkinson [ Mon Aug 14, 2017 7:49 am ]
Post subject:  A busy night for Perseids

Following on from my visual observations on Saturday night (http://www.boltonastro.co.uk/forums/viewtopic.php?f=18&t=951), and having watched The Sky At Night feature on detecting meteors by radar echoes, I set up a receiver and left it running overnight.

When I checked this morning it had picked up dozens of strong echoes, including these around 2:45am BST:
Attachment:
File comment: Radar echoes from three Perseid meteors in the early hours of 14-Aug.
Perseids49.png
Perseids49.png [ 158.44 KiB | Viewed 1907 times ]
The radio signals are converted into audible "pings" which are displayed in this 3D spectrogram. The left-to-right axis is frequency, the right-to-left axis is time (covering about 8 minutes) and the vertical axis is signal strength (and the brighter the colour the stronger the signal). Some of the signals are widely spread in frequency due to the Doppler-shift.

I shall be doing a more detailed write-up in a future edition of The Bolton Astronomer.

Author:  rwilkinson [ Tue Aug 15, 2017 2:17 pm ]
Post subject:  Re: A busy night for Perseids

I've had a look though my sequence of screen-caputres and counted 350 meteor detections between 11pm on Sunday and 9:20am on Monday!

Author:  rwilkinson [ Mon Oct 09, 2017 12:38 pm ]
Post subject:  A busy night for Draconids too!

Last night I set up the meteor-detector system again, to catch the peak of the Draconids shower.
I've just been through the logs, and counted 352 echoes over the course of 18 hours:
Attachment:
draconids2017.gif
draconids2017.gif [ 5.53 KiB | Viewed 1720 times ]

There will be a feature all about this technique in our next newsletter.

Author:  ANuttall [ Wed Oct 11, 2017 7:14 pm ]
Post subject:  Re: A busy night for Perseids

kept looking out for these most of the night but was too cloudy

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