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Solar Analemma. This outstanding image from Alexandra Hart taken over a period of 4 years charts the midday position of the sun in the sky throughout the year. The north–south component of the analemma results from the change in the Sun's declination due to the tilt of Earth's axis of rotation. The east–west component results from the nonuniform rate of change of the Sun's right ascension, governed by combined effects of Earth's axial tilt and orbital eccentricity.

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Geomagnetic Unrest Jan 2020

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Carbon60
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Geomagnetic Unrest Jan 2020

Post by Carbon60 » Sat Jan 11, 2020 8:43 am

The past few days saw an outbreak of beautiful aurora around the poles although there was no significant solar activity to be seen. What did occur was the interplanetary solar wind, which carries with it a magnetic filed, flipped south sporadically and this allowed the solar wind to penetrate deeper than usual into our magnetic shield, exciting oxygen and nitrogen in our upper atmosphere. The geomagnetic effects were easily detected on my magnetometer here in the UK, as shown below.

I've also summarised the geomagnetic activity over the past month since Dec 8th. Coupled with an uptick in cycle 25 activity, 2020 seems to be off to a good start.

Thanks for looking.

Stu.
20200105_Solar Wind.jpg
20200105_Solar Wind.jpg (161.13 KiB) Viewed 215 times
20200110_Solar Wind.jpg
20200110_Solar Wind.jpg (189.29 KiB) Viewed 215 times
20200110_Dec_Jan.jpg
20200110_Dec_Jan.jpg (219.58 KiB) Viewed 215 times
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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MapleRidge
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Re: Geomagnetic Unrest Jan 2020

Post by MapleRidge » Sat Jan 11, 2020 1:21 pm

Hi Stuart...

Great review of the events and I've been following the reports on SpaceWeather where your observations have been posted as well.

Always great to see your data as so few have your type of setup to monitor this activity.

Brian
Brian Colville

Maple Ridge Observatory

Cambray, ON Canada

Photos: https://www.flickr.com/photos/185395281@N08/albums

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Montana
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Re: Geomagnetic Unrest Jan 2020

Post by Montana » Sat Jan 11, 2020 4:07 pm

Great data Stuart! I saw on Spaceweather about this flipping, glad you saw it too on your monitors :bow we need some clear skies and some auroras to come south. :hamster:

Alexandra

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Re: Geomagnetic Unrest Jan 2020

Post by marktownley » Sun Jan 12, 2020 2:17 pm

Excellent record again Stuart!
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Carbon60
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Re: Geomagnetic Unrest Jan 2020

Post by Carbon60 » Tue Jan 14, 2020 6:38 am

Many thanks Brian, Alexandra and Mark.

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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