SUNSPOT MONITORING – JUNE 7, 2021

Here are today’s solar images taken from Al Sadeem Observatory, June 7, 2021.

The sky was generally clear with moderate breeze which provided good transparency but average seeing at the time these images were taken. 

Solar activity is at very low levels over the past 24 hours. AR2827 (Hsx/alpha) has lost its trailer spots leaving only its unipolar leader spot. AR2829 (Dao/beta) exhibited some consolidation and growth of its entire sunspot structure. Two new bipolar sunspot groups have recently emerged near the Sun’s western limb. First is the newly designated AR2830 (Dso/beta) near the SW limb and another one above AR2827 (currently undesignated, encircled). The latest sunspot number (based on visual count and Wolf number calculation) is 49. Only a few B-class solar enhancements mainly from AR2829 and AR2830  were recorded by space weather agencies over the past 48 hours.

Enhanced plages associated with the upper-mentioned sunspot groups and few other tiny ones mostly at the SW quadrant, few short stable filaments near the active regions, and some small quiescent prominences at the opposite (NW and SW) limbs, were the other noteworthy solar features distinctively captured in H-alpha imagery.

Space weather agencies* forecast solar activity to remain at very low levels with chances of solar flares of mostly B-class to C-class intensity in the next few days, from the upper-mentioned sunspot groups. 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, June 7, 2021, from NCM Al Wathba Station):

Average Temperature: 41.3°C

Average Humidity: 28.0%

Average Wind Speed and Direction: 21.27 kph from NNW

Average Cloud Cover: 0%

Average Air Pressure: 989.67 hPa

Average Solar Radiation: 151.0 W/m^2

Shop