SUNSPOT MONITORING – APRIL 2, 2019

SUNSPOT MONITORING – APRIL 2, 2019

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Here are today’s solar images taken from Al Sadeem Observatory, April 2, 2019.

The sky was mostly clear (with slight haze) with moderate air turbulence which provided average seeing and transparency at the time these images were taken.

Slight spot structure growth was observed and expanded its coverage area with the recent sunspot group AR2737 but was inactive. No significant flaring activity was recorded The latest sunspot number (based on visual count and Wolf number calculation) is 16. Most solar activity was evident at the Sun’s northern hemisphere through the presence of the associated scattered plage of AR2737, few tiny filaments and prominenes (including a huge eruptive one at the northeastern 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. 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 (4:55PM – 5:15PM, April 2, 2019):

Average Temperature: 33.8°C

Average Humidity: 38%

Average Wind Speed and Direction: 22.7 kph from WNW

Average Cloud Cover: 25%

Average Air Pressure: 997.8 hpa

Average Solar Radiation: 226.475 W/m^2

Average UV Radiation: 319.5 µW/m^2 (low)

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