David's Astronomy Pages (All Sky Camera) Aurora on night 2024-08-28 / 2024-08-29

Aurora  2024-08-27

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Aurora 2024-08-30

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 just after midnight on the night 2024-08-28 / 2024-08-29 up to KP 2.5, associated with geomagnetic activity up to KP 2.5 This is most likely the final end of the storm that had produced  Kp 5.5 / KP 6 (G1/G2) geomagnetic conditions caused by the arrival of a CME / CME Tail on 2024-08-27 / 2024-08-28. Skies in NE Scotland were cloudy to begin with but cleared to reveal the weak auroral display. Activity was visible from the Clair Observatory (+57N)  from 2024-08-28 23:10 to 01:10 UT (00:15 to 02:10 LT). Peak activity was at around 00:00 UT (01:00 LT) Observed activity comprised weak auroral arc up to 10° altitude and rays up to 15-18°. -  Scandinavia magnetometers indicate some minor activity in magnetometers readings around 23:00 to 01:00 UT, but only recorded geomagnetic activity as far south as rvk (Rorvik, 64.95N).      - Telescope Images from night 2024-08-28 >>     - Aurora Video & Pictures from previous night 2024-08-27 >>

Night Summary (Keogram) Plot

Night Summary Plot - North Sky (2024-08-28 ) Times on plot are local times (BST  = UTC +01h ) Keogram plot affected by cloud Aurora visible on keogram at 00:15 to 02:10 LT (23:15 to 01:10 UT)   Strongest aruora (albeit relatively weak) was at around 01:00 LT (00:00 UT)

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Pictures

Colour Image looking NNW 2024-09-29 00:19 UT (01:19 LT) Observatory is open (pointing roughly due south) and actively imaging targets The Plough portion of Ursa Major can be easily seen.

Panoramic View - Northern Sky

2024-08-28 23:15 UT (2024-08-29 00:15 LT)  Clouds moving away to reveal western part of a weak auroral arec

2024-08-28 23:35 UT (2024-08-29 00:35 LT)  Weak auroral arc to 9° altitude

2024-08-28 23:55 UT (2024-08-29 00:55 LT)  Curtains moving long auroral arc, very faint rays to 8-12° altitude

2024-08-28 23:58 UT (2024-08-29 00:58 LT)  Auroral activity brightening slightly. Auroral arc partial hidden by foreground cloud along N - NE horizon Weak rays to 15-18° altitude

2024-08-29 00:04 UT (01:04 LT)  Auroral activity continuing. Weak rays to 15° altitude. Moon rising in NE sky.

2024-08-29 00:16 UT (01:16 LT)  Activity beginning to fade. Auroral arc to 8° altitude. Moon (24% phase) in NE Sky.

2024-08-29 00:24 UT (01:24 LT)   Auroral arc fading, but some distinct rays in NNW sky

2024-08-29 00:29 UT (01:29 LT)   Curtain & set of rays in NNW-N direction (altitude up to 9-10°)

2024-08-28 00:43 UT (01:43 LT)  Very faint trace of aurora arc along northern horizon.  Weak glow remains until around 01:10 UT (02:10 LT) Moon (24% phase) continuing to climb in NE-ENE sky

2024-08-28 01:04 UT (02:04 LT)  Very faint residual glow from the earlier auora. Satellite flash or more likely a meteor in NW Sky (altitude 55°)

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 - 2024-08-28 / 2024-08-29 Minor activity in magnetometers readings at 23:00 to 01:00 UT, but only recorded down to rvk (Rorvik, 64.95N) 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_2024-04-30 / 2024-05-01 Not captured

SAMNET's magnetometer at Crooktree, Near Torphins  (Chart Explanation)  - Shows no high activety spikes on night 2024-08-28 / 2024-08/29   (compare this with high spike in activity the previous night)

8-day Lerwick Observatory K Index Showing a max KP 3 on the night of 2024-08-28 / 2024-08-29  (contrast this with KP6 reached on the previous night)

Planetary K-Index and other information (Space Weather Prediction Centre) shows KP Index reaching KP 2.5 in night of 2024-08-28 / 2024-08-29 (contrast this with KP 5.5 on previous night)

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Aurora Forecast, NOAA/Ovation (for reference)

Aurora Forecast for 2024-08-29 00:19 UT (01:19 LT) (From Space Weather Prediction Centre,  http://www.swpc.noaa.gov )

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