AR12794-AR12795 Ca-K e H-alpha

Regioni attive AR12794-AR12795 riprese in Ca-K e H-alpha. TS 80 ED f/7, Lunt modulo Ca-K B1200, Lunt LS60THaDS60/B1200PT, Tele Vue Powermate 2.5x, camera Point Grey Grasshopper3 GS3-U3-28S4M.