Sun in CaK and HA

TS 80ED f/7, Lunt modulo CaK B1200, Lunt LS60THa/B1200, Grasshopper3 GS3-U3-28S4M.

A comparison between FD Cak and H-Alpha taken 1/9/2020. I used a Lunt LS60THa/B1200 and a TS 80ED f/7 with a Grasshopper3 GS3-U3-28S4M.

Copyright: Salvo Lauricella