Here are today’s solar images taken from Al Sadeem Observatory, March 20, 2021.
The sky was mostly clear with intermittent moderate breeze which provided good transparency but average seeing at the time these images were taken.
Very low solar activity has prevailed over the past 24 hours. The lone visible sunspot group AR2810 (Axx/alpha) exhibited significant structural decay and has remained inactive. The latest sunspot number (based on visual count and Wolf number calculation) is 11. No significant flaring activity was recorded over the past 24 hours. A new small active region is also seen about to rotate into Earth-view from the NE limb and will be visible in the 24 hours.
The Sun exhibited mostly small faint quiescent prominences at the limbs, with the exception of few huge eruptive ones at the SW limb, few shot eruptive filaments within AR2810 and other sections of the Sun’s disk, and the small enhanced plages associated with former AR2808 and AR2810, as distinctively captured in H-alpha imagery.
Space weather agencies* forecast solar activity to be at very low levels with chances of solar flares of up to B-class intensity mainly from AR2810. 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 (4:40 PM – 5:05 PM, March 20, 2021, from NCM Al Wathba Station):
Average Temperature: 30.4°C
Average Humidity: 35.0%
Average Wind Speed and Direction: 22.5 kph from WNW
Average Cloud Cover: 0%
Average Air Pressure: 1000.05 hPa
Average Solar Radiation: 234.0 W/m^2