SUNSPOT MONITORING – JULY 26, 2021

Here are today’s solar images taken from Al Sadeem Observatory, July 26, 2021.

The sky was partly covered with high cirrus clouds with moderate breeze which provided average transparency but average seeing at the time these images were taken.

Solar activity has subsided further as continuous decay was observed in visible sunspot groups AR2846 (Bxo/beta) and AR2847 (Axx/alpha). Both sunspot groups are magnetically simple with no significant flaring activity recorded over the past 24 hours. The latest sunspot number (based on visual count and Wolf number calculation) is 24. 

Other noteworthy solar features observed were the enhanced plages of the upper-mentioned sunspot groups, as well as the ones associated with former sunspot groups AR2844 (approaching the SW limb), AR2848 (to the right of AR2846), and AR2849 (to the left of AR2847), several short eruptive filaments across the Sun’s disk, and small quiescent prominences at the limbs, as distinctively captured in H-alpha imagery.

Space weather agencies* forecast very low solar activity with chances of B-class to C-class solar flares in the next few 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. For H-alpha imagery, the equipment used are Lunt 60mm H-alpha solar telescope, and QHYCCD 290III mono camera; all mounted on Skywatcher EQ6 pro mount 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 – 6:00 PM, July 26, 2021, from NCM Al Wathba Station):

Average Temperature: 41.93°C

Average Humidity: 23.0%

Average Wind Speed and Direction: 19.93 kph from NNW

Average Cloud Cover: 55%

Average Air Pressure: 987.0 hPa

Average Solar Radiation: 165.67 W/m^2

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