Here are today’s solar images taken from Al Sadeem Observatory, March 19, 2019.
The sky was clear with light air turbulence making the seeing and transparency good at the time these images were taken.
The lone visible sunspot group AR2735 (Modified Zurich/Mcintosh sunspot configuration: Bxo/beta) expanded slightly in coverage area particularly on the trailer with header spot consolidation but has remained stable, and inactive over the past 24 hours. No significant flaring activity was recorded. The latest sunspot number (based on visual count and Wolf number calculation) is 14. Few small plages associated with AR2735, a large elongatd filament above AR2735, and few prominences (small quiescent ones at the southeastern section and moderate huge mound-one at the northwestern limb) were distinctively captured in H-alpha imagery.
Space weather agencies* forecast solar activity to remain at low levels with chances of weak X-ray fluxes or flares ranging up to B-class (possibly up to isolated C-class) intensity. The extent of the frequency and intensity of the Sun’s activity will highly depend on the magnetic flux fluctuations happening in the visible ARs in the coming days. 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 and Lunt H-alpha solar telescope and ZWO120MM CMOS camera for H-alpha imagery, mounted on Skywatcher EQ6 Pro. 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 (4:50PM – 5:10PM, March 19, 2019):
Average Temperature: 22.8°C
Average Humidity: 40.5%
Average Wind Speed and Direction: 29.4 kph from WNW
Average Cloud Cover: 0%
Average Air Pressure: 1004.3 hpa
Average Solar Radiation: 174.305 W/m^2
Average UV Radiation: 319.5 µW/m^2 (low)