Massive limb eruption in calcium light

On the morning of 10-26-2021 at 10:50am Chicago Time, Active region 2891 unleashed several powerful mass ejections. The video shows just one of these events captured at the wavelength 393.37nm which represents ionized Calcium plasma. A celestron luminos 2.5x barlow was used to extend the focal length to approximately 3000mm. This plasma cloud billowed out […]


Coverage of Sunspot group AR 2303

The image shows 4 phases of coverage of the Sunspot AR 2303 during the partial solar eclipse on March 20th, 2015. Avistream with 300 frames each, 50% stacked. Editing with AviStak 1.8 + Photoshop CS 2