Here are today’s solar images taken from Al Sadeem Observatory, July 13, 2021.
The sky was hazy to partly cloudy with light to moderate breeze which provided average to poor transparency and seeing at the time these images were taken.
AR2841 has completely disintegrated into plage and was generally inactive. Meanwhile, AR2842 (Hsx/alpha) exhibited minuscule to no change in its unipolar structure and produced a weak B1.0-class solar flare over the past 24 hours. The latest sunspot number (based on visual count and Wolf number calculation) is 11.
Nothing much significantly going on with the Sun lately, aside from the enhanced plages of the upper-mentioned sunspot groups, several tiny quiescent prominences at the NW, SE, and SW limbs, and an eruptive filament beside AR2842, 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 13, 2021, from NCM Al Wathba Station):
Average Temperature: 46.43°C
Average Humidity: 16.33%
Average Wind Speed and Direction: 8.9 kph from S
Average Cloud Cover: 35% (mostly haze)
Average Air Pressure: 983.0 hPa
Average Solar Radiation: 146.67 W/m^2
