There were 20 images stacked in RegiStack6 and processed in PS CS4, exposures times for the images were 1/640th second and ISO 200. RegiStax6 is very good at stacking solar, lunar and planetary images.
The H-alpha image was taken with a 80mm Lunt solar telescope using a Canon 700D camera and a 2x Barlow lens.
~ Sunspot AR2422 crackling with solar flares ~
Information from the Spaceweather.com website on the 29th September, explaining the activity around these dark sunspots on the solar surface.
Dark sunspots like these nearly always course solar flares…so I’m always on the look out for them. What is a solar flare please go NASA’s gsfc website which explains them in detail at: