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 […]