SUNSPOT MONITORING – JULY 27, 2020

SUNSPOT MONITORING – JULY 27, 2020

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Here are today’s solar images taken from Al Sadeem Observatory, July 27, 2020.

The sky was mostly cloudy with intermittent moderate breeze (from an approaching thunderstorm cloud) which provided average to poor transparency and seeing at the time these images were taken.

The lone visible sunspot group AR2767 (Modified Zurich/Mcintosh sunspot configuration: Hsx/alpha) has experienced slight growth in umbral structure but has remained stable in magnetic structure and generally inactive over the past 24 hours as it transits the solar disk. No significant flaring activity was recorded. The latest sunspot number (based on visual count and Wolf number calculation) is 11. Several small quiescent prominence activities at the limbs, a small mound filament at the far northern hemisphere, and remnant tiny plages beside AR2767 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 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 (5:35 PM – 6:00 PM, July 27, 2020, from NCM Al Wathba Station):

Average Temperature: 41.87°C

Average Humidity: 29.33%

Average Wind Speed and Direction: 16.57 kph from N

Average Cloud Cover: 85%

Average Air Pressure: 989.53 hPa

Average Solar Radiation: 185.33 W/m^2

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