SUNSPOT MONITORING – JULY 10, 2021

Here are today’s solar images taken from Al Sadeem Observatory, July 10, 2021.

The sky was partly cloudy with light to moderate breeze which provided average transparency and seeing at the time these images were taken.

AR2839 has completely disintegrated into plage. The newly designated sunspot group AR2841 (Axx/alpha) exhibited some decay of its entire sunspot structure, though some spot re-generation was seen on its trailer section, and produced few weak B-class solar flares over the past 24 hours, as per the latest reports of space weather agencies. Another new small sunspot region has recently rotated into Earth-view near the NE limb (encircled). The latest sunspot number (based on visual count and Wolf number calculation) is 13. 

Other noteworthy solar features observed were the enhanced plages of the upper mentioned sunspot groups, and some huge eruptive prominences at the SW and NE limbs as distinctively captured in H-alpha imagery.

Space weather agencies* forecast solar activity to be at very low levels with minimal chance of B-class solar flares in the next 24-48 hours. 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 QHYCCD 290III 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 (5:30 PM – 6:00 PM, July 10, 2021, from NCM Al Wathba Station):

Average Temperature: 46.0°C

Average Humidity: 12.33%

Average Wind Speed and Direction: 12.6 kph from SSW

Average Cloud Cover: 70%

Average Air Pressure: 985.0 hPa

Average Solar Radiation: 165.33 W/m^2

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