David's Astronomy Pages (All Sky Camera) Aurora on night  2021-08-27 /  2021-08-28

Aurora  2021-04-16

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Rocket 2021-09-27

Aurora	Notes
Pictures Videos Summary Plot Magnetometer Stack Plots (for reference) Planetary K-Index Plot (for reference) Aurora Forecast, NOAA/Ovation (for reference)	- Aurora display in NE Scotland - Activity observed for around 6 hours from 21:10 to 03:10 UT, somewhat spoilt by bright moonlit sky - Peak of activity (kp4) at around 22:10 with auroral rays up to 25-30° altitude.  - Other peaks at around at 00:10 & 02:15 UT      - Telescope Images from 2021-08-27 >>

Pictures

Panoramic View - Northern Sky

2021-08-27 21:13 UT Auroral arc just visible against twilight sky (sun below NW horizon)

2021-08-27 21:52 UT Aurora arc with rays to 15° altitude in NW sky moving eastwards. Moon rising in E sky

2021-08-27 22:08 UT Auroral arc / curtain with rays to at least 20° altitude.   Moon climbing in E sky

2021-08-27 22:10 UT Aurora arc / curtain with rays to at least 25° altitude.   Moonlit sky.

2021-08-27 23:08 UT Aurora arc fading , but still just visible against Moonlit sky.

2021-08-27 23:49 UT Aurora arc brightening again.  Moonlit sky.  Reflection artifact in W - WNW direction

2021-08-28 00:02 UT Aurora arc with curtain developing. Moonlit sky.

2021-08-28 01:08 UT Aurora activity, with faint rays to 15° altitude.  Moonlit sky.  Reflection artifact in WNW-NW direction

2021-08-28 02:04 UT Aurora rays to 15-20° altitude in NNW sky moving eastwards.  Moonlight spoils view. Reflection artifact in NW direction.

2021-08-28 02:05 UT Aurora curtain / rays in N sky moving eastwards.  Moonlit sky. Reflection artifact in NW direction.

2021-08-28 02:07 UT Aurora curtain / rays in N sky moving eastwards.  Moonlit sky. Reflection artifact in NW direction.

2021-08-28 02:13 UT Aurora arc with rays in N-NNE sky moving eastwards.  Moonlit sky. Reflection artifact in NW direction.

2021-08-28 02:07 UT Aurora fading but occasional rays to 20-25° altitude  Moonlit sky. Reflection artifact in NNW direction. Twilight developing in NE sky

30s exposures taken with Oculus All Sky Camera

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 Videos

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Night Summary Plot

Night Summary Plot - North Sky (2021-08-27 / 2021-08-28) Times on plot are local times (UT + 1h) Peaks evident at 23:10, 01:10 and 03:15 LT (22:10, 00:10 and 02:15 UT)

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Magnetometer Stack Plots (for reference)

Magnetometer Stack Plots from Scandinavia (ordered by latitude) H Component - 2021-08-27 / 2021-08-28 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)

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Aurora Forecast, NOAA/Ovation (for reference)

Aurora Forecast at 2021-08-27 20:00 UT for 20:58 UT (From Space Weather Prediction Centre,  http://www.swpc.noaa.gov )

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