SUNSPOT MONITORING – FEBRUARY 17, 2020

SUNSPOT MONITORING – FEBRUARY 17, 2020

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The sky was generally mostly cloudy with intermittent light winds which provided good seeing but poor transparency at the time these images were taken.

Solar activity remains at very low levels over the past 24 hours. No sunspot groups were visible at this moment. No significant flaring activity was recorded. The latest sunspot number (based on visual count and Wolf number calculation) is 0.  Not much going on with the Sun lately except for tiny faint quiescent prominences at the limbs 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 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 (4:45 PM – 5:05 PM, February 17, 2020, from NCM Al Wathba Station):

Average Temperature: 31.45°C

Average Humidity: 13%

Average Wind Speed and Direction: 4.35 kph from variable directions

Average Cloud Cover: 90%

Average Air Pressure: 1005.8 hpa

Average Solar Radiation: 221.5 W/m^2

Average UV Radiation: — µW/m^2

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