Solar Hα excess during Solar Cycle 24 from full-disk filtergrams of the Chromospheric Telescope A. Diercke, C. Kuckein, P. W. Cauley, K. Poppenhäger, J. D. Alvarado-Gómez, E. Dineva and C. Denker A&A, 661 (2022) A107 Published online: 12 May 2022 DOI: 10.1051/0004-6361/202040091