SUNSPOT MONITORING – JULY 25, 2020

SUNSPOT MONITORING – JULY 25, 2020

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Here are today’s solar images taken from Al Sadeem Observatory, July 25, 2020.

The sky was generally clear but with calm breeze which provided good 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 shrinkage in spot structure No significant flaring activity was recorded. The latest sunspot number (based on visual count and Wolf number calculation) is 11. Due to its relatively simple, stable unipolar spot structure, it is not expected to be a major threat of any major flaring activity in the few days. Several small quiescent prominence activities at the limbs and the small enhanced plage beside AR2767 gradually decaying 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 25, 2020, from NCM Al Wathba Station):

Average Temperature: 42.0°C

Average Humidity: 23.33%

Average Wind Speed and Direction: 8.63 kph from SE

Average Cloud Cover: 5%

Average Air Pressure: 990.7 hPa

Average Solar Radiation: 178.33 W/m^2

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