2021 12 17 12h 30' 53 sec CET Sun Ca K

Optics : 80/480 Apo + ZWO EAF;

Mount : Ioptron CEM70G & Ioptron TriPier;

Filter : Lunt B600 Calcium K wave length;

Camera : ZWO ASI 174 MM;

Software : FireCapture, AutoStakkert, Photoshop.

 

Equivalent Focal Length = 480 mm

 

Solar Active Region NOAA 12907, 12908, 12909 (from right to left).

 

Casalecchio di Reno - Italia

44° 29’ 29” N

11° 14’ 58” E

Done