Here are today’s solar images taken from Al Sadeem Observatory, February 25, 2019.
The sky was mostly clear with intermittent moderate to fresh breeze making the seeing and transparency average at the time these images were taken.
The Sun still exhibits no visible sunspot groups and relatively quiet solar activity has persisted over the past 24 hours. The latest sunspot number (based on visual count and Wolf number calculation) is 0. In spite the absence of any active sunspot regions, at the western part of the Sun’s disk are several huge eruptive prominences, as well as the remnant plage of former AR2733 with a stable receding filament seen nearing the western limb as distinctively captured in H-alpha imagery.
Space weather agencies* forecast solar activity to remain at very low levels with chances of weak X-ray fluxes or flares ranging up to B-class intensity. 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 (4:45PM – 5:05PM, February 25, 2019):
Average Temperature: 25.1°C
Average Humidity: 30%
Average Wind Speed and Direction: 28.1 kph from variable directions
Average Cloud Cover: 10%
Average Air Pressure: 1004.8 hpa
Average Solar Radiation: 164.11 W/m^2
Average UV Radiation: 99 µW/m^2 (low)