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Even though skies were cloudy for much of the time, last nights auroral display lasted most of the night, kicking off soon after sunset.
https://normanlockyer.com/the-observatory/lockyer-technology-centre/aurora-camera/
David
Clear here most of the night and spectacularly dynamic, particularly for about an hour around 23:00 UT. Captured on the all sky camera where the image to the north was saturated most of the time
http://www.threehillsobservatory.co.uk/allsky_camera/allsky_camera_page.htm
here is a single frame teaserCheers
RobinAttachments:
Here is a panorama from above our village of Brinkhill, east Lincs, c.1930 hrs UT.
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Did anybody record STEVE during the auroral activity? My RMS Meteor camera shows an interesting phenomenon around 21.00hrs. to the west of my location in Sussex, so somewhere over south/southwest England. My video is here: https://youtu.be/yXpZOL5TDWU STEVE, if indeed it is STEVE, appears on the lefthand side of the frame just to the left (south) of alpha Oph at az 263 deg, alt 21 deg. A few frames have been corrupted.
Hi Nick,
The STEVE phenomenon looks like that and it usually lasts for several minutes. Ask Sandra about your event.
I can’t confirm it on my meteor cameras but one of my north-facing ones recorded a very brief auroral ray brightening at 21:00:13 UT during lots of rapid changes (see attached). My full (mono) video from camera UK001H is here:
Cheers,
Alex.
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This event happened on the night that I had to leave at 2am to get to Heathrow for a flight to La Palma so I didn’t have much chance to see it. The all-seeing eyes of the cameras in my garden did record it though and I’ve just got around to looking at the video. This is a timelapse from 2000 – 0000 UTC from my NW camera in Chelmsford:
https://nickdjames.com/aurora/aurora_20241010_ndj.mp4
It was a remarkably bright and active display for us down here in the south.
That’s two really spectacular displays so far this year. The first one while I was away at the BAA meeting in Greenock and the second when all my cameras were picked for a trip to La Palma. Could someone please arrange that the next one occurs at a more convenient time…
Nick,
The sequence between 20:50 and 21:10 or so is very good.
That after about 23:00 to 23:20 or so is remarkable by the overall brightness of the display at time.It was cloudy but not fully overcast here in Dorset and I saw the one around 21:00 UT lighting up the clouds with red and green.
Two spectacular displays in the one year. I’m not complaining.
With all these high-energy particles from the Sun, I am wondering if that explains why smoke alarms and the electronic door bell have been going off spontaneously. Could there be a link with this year’s aurorae?!Richard
Richard,
Apart from generating very pretty aurorae the increased solar activity has a significant effect on small satellites in low Earth orbit, not only in terms of the increased radiation environment but, more significantly, through increased drag which requires the use of propellant to maintain the desired orbital altitude.
Nick.
Nick, Thanks for posting that fine video record of the event, at least of the northern, not-too-high-up parts of it! It shows what I saw visually from near Cambridge (and it’s good to see that not much happened during the hour that I went indoors to warm up and recharge the camera). –John.
It is interesting to try to compare Nick’s time lapse with what was seen at the same time from 400km further north, now archived at
http://threehillsobservatory.co.uk/allsky_camera/allsky_20241010_aurora.mp4
(South is to the left, west is up)
The short intense burst at ~21:02 corresponds to a bright band briefly appearing to the south in my camera and the other intense period ~23:15-23:35 coincides with when it shifted from north to overhead and south hereCheers
RobinA spectrum time series showing the variation in the various emission lines during this event
Cheers
RobinHere is the spectrum time series as a 2D greyscale plot with the intensities of three line extracted (qualitative only, no flux calibration)
I was surprised to find that it was only last year that hyperspectral techniques had first been applied to aurora
https://phys.org/news/2024-08-full-d-spectral-image-aurora.htmlCheers
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