David's Astronomy Pages (All Sky Camera) Aurora on night 2023-09-20 - Under Construction

Aurora  2023-09-18

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Aurora 2023-09-20

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)

- Aurora activity on the night of 2023-09-20 / 2023-09-21 .... associated with a TBA  * UNDER CONSTRUCTION severe G4-Class geomagnetic storm (Kp 8) that was caused by an earth directed CME (originating from the sun on 2023-04-21) hitting the earth's magnetic field.  Aurora were seen as far south as ... Unfortunately the aurora display was only locally / partially visible from NE Scotland because of cloud cover.  Activity was visible from the Clair Observatory (+57N) during small / local breaks in cloud at 21:15 - 21:20,  22:08 - 22:18,  22:25 - 22:58  &  23:20 - 23:55 UT  (corresponding to 23:08 -23:18, 23:25 - 23:58  &  00:20 - 00:55 LT). Observed activity included auroral rays to 50-60°+ altitude occasionally stretching to near zenith. -  Scandinavia magnetometers indicate activity from 2023-04-23 19:00 UT to around 2023-04-22 07:00 UT, with peaks of activity at 19:30-21:00 UT and  03:00 - 06:00.      - Telescope Images from 2023-09-20 >>

Night Summary (Keogram) Plot

Night Summary Plot - North Sky (2023-09-18 / 2023-09-19 ) Times on plot are local times (BST  = UTC +01h ) Keogram shows cloud for almost the entire night, but with hints of aurora activity at xxx  LT

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Pictures

Panoramic View - Northern Sky - Under Construction

2023-09-18 xx:00 UT (xx:00 LT)  - TBA Auroral activity in ...

30s exposures taken with Oculus All Sky Camera

AllSky View - TBA (north on right hand side of image)

2023-09-18 xx:00 UT (xx:00 LT) - Normal Image Auroral ....

2023-09-18 xx:00 UT (xx:00 LT) - Difference Image Auroral ...

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 Videos

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Magnetometer Stack Plots (for reference)

Magnetometer Stack Plots from Scandinavia (ordered by latitude) H Component - 2023-09-20 / 2023-09-21 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) (K indices of 5 or greater indicate storm-level geomagnetic activity around earth)  (from http://services.swpc.noaa.gov) planetary-k-index_2023-09-20 / 2023-09-21 Not captured

SAMNET's magnetometer at Crooktree, Near Torphins  (Chart Explanation)

8-day Lerwick Observatory K Index - TBA

Planetary K-Index and other information (Space Weather Prediction Centre) shows KP Index reaching KP8 on x

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Aurora Forecast, NOAA/Ovation (for reference)

Aurora Forecast at 2023-09-18 xx:00 UT (xx:00 LT for xx:45 UT  (xx:00 LT) (From Space Weather Prediction Centre,  http://www.swpc.noaa.gov )

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