SUNSPOT MONITORING – SEPTEMBER 17, 2020

SUNSPOT MONITORING – SEPTEMBER 17, 2020

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Here are today’s solar images taken from Al Sadeem Observatory, September 17, 2020.

The sky was clear with intermittent light to breeze which provided good transparency but average seeing at the time these images were taken.

The Sun remains spotless and generally inactive on its 27th consecutive day. No significant flaring activity was recorded over the past 24 hours. The latest sunspot number (based on visual count and Wolf number calculation) is 0. Nothing much significant going on with the Sun lately except for exhibiting several minor plasma ejections, particularly small quiescent prominences at the limbs, with the exception of a moderately huge eruptive one at the west-northwestern limb, as the only visible solar features distinctively captured in H-alpha imagery.

Space weather agencies* forecast solar activity to be at very low levels with chances of weak X-ray fluxes or flares 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. For H-alpha imagery, the equipment used are Lunt 60mm H-alpha solar telescope, and QHYCCD290III mono camera; all mounted on Skywatcher EQ6 pro mount 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 (5:00 PM – 5:20 PM, September 17, 2020, from NCM Al Wathba Station):

Average Temperature: 41.3°C

Average Humidity: 7%

Average Wind Speed and Direction: 10.95 kph from N

Average Cloud Cover: 0%

Average Air Pressure: 995.0 hPa

Average Solar Radiation: 178.5 W/m^2

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