SUNSPOT MONITORING – MARCH 11, 2020

SUNSPOT MONITORING – MARCH 11, 2020

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Here are today’s solar images taken from Al Sadeem Observatory, March 11, 2020.

The sky was generally clear but with intermittent moderate winds which provided good transparency but average seeing at the time these images were taken.

AR2758 has completely decayed into a plage. Space weather agencies recorded a weak B-class solar flare over the past 24 hours. The latest sunspot number (based on visual count and Wolf number calculation) is 0.  The Sun exhibited a couple of huge eruptive prominences at the northwestern limb (all non-Earth directed), as well as the associated disintegrating plage of former AR2758 at the southern hemisphere, were distinctively captured in H-alpha imagery.

Space weather agencies* forecast solar activity to remain at very low levels with chances of weak X-ray fluxes or flares ranging up to B-class intensity. Close monitoring is being conducted by numerous space weather agencies for any significant development.

Equipment used are Skywatcher 120mm refractor telescope with Baader filter and unmodified Canon EOS 1D Mark IV DSLR camera for visible imagery and Lunt H-alpha solar telescope and QHYCCDIII mono camera for H-alpha imagery, mounted on Skywatcher EQ6 Pro. Pre-processing of visible solar images was performed in PIPP, stacking in Autostakkert, slight wavelet adjustments in Registax 6 and post-processing in Adobe Photoshop CC.

*TECHNICAL REPORTS COURTESY OF SOLAR INFLUENCE DATA CENTER (SIDC), NOAA-SPACE WEATHER PREDICTION CENTER (NOAA-SWPC)

Weather Data (4:55 PM – 5:15 PM, March 11, 2020, from NCM Al Wathba Station):

Average Temperature: 27.75°C

Average Humidity: 26%

Average Wind Speed and Direction: 25.05 kph from NNW

Average Cloud Cover: 0%

Average Air Pressure: 1005.4 hPa

Average Solar Radiation: 229 W/m^2

Average UV Radiation: — µW/m^2

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