SUNSPOT MONITORING – FEBRUARY 20, 2020

SUNSPOT MONITORING – FEBRUARY 20, 2020

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No sunspot monitoring issued for February 18-19, 2020 due to time constraints from observatory-related errands and unfavorable weather conditions prevailed those times.

The sky was partly to mostly cloudy (imaged through a brief sky window) with intermittent light to moderate winds which good seeing but poor transparency at the time these images were taken.

Here is today’s white-light imagery taken from Al Sadeem Observatory, February 20, 2020.

The Sun remains in its spotless and generally quiet state over the past 3 days. No significant flaring activity was recorded. The latest sunspot number (based on visual count and Wolf number calculation) is 0.

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 QHYCCDIII mono 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 (5:30 PM – 5:40 PM, February 20, 2020, from NCM Al Wathba Station):

Average Temperature: 29.85°C

Average Humidity: 22%

Average Wind Speed and Direction: 3.95 kph from S

Average Cloud Cover: 85%

Average Air Pressure: 1001.3 hpa

Average Solar Radiation: 60 W/m^2

Average UV Radiation: 0 µW/m^2 (low)

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