Here are today’s solar images taken from Al Sadeem Observatory, July 12, 2021.
The sky was partly cloudy with moderate breeze which provided average transparency and seeing at the time these images were taken.
AR2841 (Axx/alpha) exhibited slight shrinkage of its leader spot, as well as decay of its trailer spots; produced few weak B-class solar flares over the past 48 hours, as per the latest reports of space weather agencies. The larger unipolar sunspot group AR2842 (Hsx/alpha) has been dormant and magnetically stable. The latest sunspot number (based on visual count and Wolf number calculation) is 22.
Nothing much significantly going on with the Sun lately, aside from the enhanced plages of the upper-mentioned sunspot groups and several tiny quiescent prominences, with few faint eruptive ones, at the limbs, as distinctively captured in H-alpha imagery.
Space weather agencies* forecast solar activity to be at very low levels with chances of weak solar flares of up to B-class intensity in the next 24 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 12, 2021, from NCM Al Wathba Station):
Average Temperature: 40.77°C
Average Humidity: 32.67%
Average Wind Speed and Direction: 21.23 kph from NNW
Average Cloud Cover: 60%
Average Air Pressure: 984.0 hPa
Average Solar Radiation: 153.0 W/m^2