A powerful Solar Flare from active region NOAA 9077 on 14 July 2000 (PSPT CaIIK Filter (393.3 nm)

Solar Flare on 18 november 2003 (PSPT CaIIK Filter (393.3 nm)

Solar Prominence on 18 november 2003 (PSPT CaIIK Filter (393.3 nm)