David's Astronomy Pages (All Sky Camera) Aurora on night 2024-08-31 / 2024-09-01

Aurora  2024-08-30

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Aurora 2024-09-12

Aurora

Notes

Night Summary (Keogram) Plot Pictures Videos Magnetometer Stack Plots (for reference) Planetary K-Index Plot (for reference) Aurora Forecast, NOAA/Ovation (for reference)

- Weak auroral activity though the entire night 2024-08-31 / 2024-09-01 associated with geomagnetic activity up to KP4 Skies in NE Scotland were mostly clear through the entire night, but with some passing cloud. Activity was visible from the Clair Observatory (+57N)  from 2024-08-31 22:00 to 2024-09:01 01:45  (23:00 to 02:45 LT) a period of around 3.75 hours. (The period of display may have been longer than this but the relative weakness of the auroral arc caused it to merge into the sky background before & after this time window.)   Peak activity was at around 22:45-22:50 UT (23:45 - 23:50 LT) and again at around 01:10 UT (02:10 LT). Observed activity comprised an auroral arc up to 9° altitude, occasional moving curtains and rays up to 30° altitude. -  Scandinavia magnetometers indicate some moderate activity in magnetometers readings from around 19:30 to 02:15 UT      - Telescope Images from night 2024-08-31 >>

Night Summary (Keogram) Plot

Night Summary Plot - North Sky (2024-08-30 ) Times on plot are local times (BST  = UTC +01h ) Aurora visible on keogram from 23:00 (or earlier?) to 02:45

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Pictures

Panoramic View - Northern Sky

2024-08-31 22:42 UT (23:42 LT)  Faint aurora arc to 7° altitude with set of distinct rays in NW sky to 20° altitude, plus faint rays in NNE-NE sky to 25-35° altitude

2024-08-31 22:47 UT (23:47 LT)  Auroral arc to 7° with set of rays in NW-N sky to 25° altitude

2024-08-31 22:49 UT (23:49 LT)  Auroral arc to 7° altitude with set of rays in NNW-N sky to 30° altitude

2024-08-31 23:03 UT (2024-09-01 00:03 LT)  Faint auroral arc with moving curtains & rays in N-NE sky to 20-25° altitude

2024-08-31 23:48 UT (2024-09-01 00:46 LT)  Auroral arc to 7-8° altitude. Satellite flash in NE sky

2024-08-31 23:53 UT (2024-09-01 00:53 LT)  Auroral arc to 8-9° altitude.

2024-08-31 23:59 UT (2024-09-01 00:59 LT)  Auroral arc to 7-8° altitude. Satellite flash in N sky.

2024-09-01 00:56 UT (01:58 LT)  Auroral arc to 9° altitude, partly covered by foreground clouds.

2024-09-01 01:12 UT (02:12 LT)  Auroral arc, moving curtains and rays to 25-30° altitude.

2024-09-01 01:44 UT (02:44 LT)  Cloud developing. Faint aurora rays in N-NNE sky

30s exposures taken with Oculus All Sky Camera

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 Videos

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Magnetometer Stack Plots (for reference)

Magnetometer Stack Plots from Scandinavia (ordered by latitude) H Component - 2024-08-31 / 2024-09-01 Activity in magnetometers readings from 19:30 to 02:15 UT Original data from Tromsø Geophysical Observatory (TGO), DTU Space (Technical University of Denmark) and Finnish Meteorological Institute (FMI, displayed on SpaceWeatherLive http://www.spaceweatherlive.com/en/auroral-activity/magnetometers). Note: Geomagnetometer activity at rvk (Rorvik, 64.95N), dob (Dombas, 62.07N), sol (Solund, 61.08N) and kar (Karmoy, 59.21N) stations are used as indicators for potential auroral activity that may be visible from my Observatory situated at latitude 57.32N  (Map of Stations)

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Planetary K-Index Plot (for reference)

Estimated 3 hour Planetary K-Index (NOAA)  (from http://services.swpc.noaa.gov) Planetary-k-index_2024-08-31 / 2024-09-01 Not captured

SAMNET's magnetometer at Crooktree, Near Torphins  (Chart Explanation)  - Shows high activity spikes on night 2024-08-31/2024-09-01 from 15:00-16:00 & 19:00-22:00

8-day Lerwick Observatory K Index Showing a max KP 4 on the night of 2024-08-31 / 2024-09-01

Planetary K-Index and other information (Space Weather Prediction Centre) shows KP Index reaching KP4 / KP4.5 on night of 2024-08-31 / 2024-09-01

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Aurora Forecast, NOAA/Ovation (for reference)

Aurora Forecast for 2024-08-31 21:57 UT (22:57 LT) (From Space Weather Prediction Centre,  http://www.swpc.noaa.gov )

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