Order by: Trending (past 30 days)Date ← Go back Solar activity in calcium On 10/09/2026 02:00 pm by Eliot Herman | Website | Tucson, AZ Share Twitter Facebook Reddit LinkedIn Email Calcium sun 14:00 MST October 9, 2026 Astrophysics 110 mm, Lunt Solar Module, ZWO camera. ZWO stacking software and Photoshop.
