A photometric in-depth look at the core-collapsed globular cluster NGC 6284 Dan Deras, Mario Cadelano, Barbara Lanzoni, Francesco R. Ferraro, Cristina Pallanca, Emanuele Dalessandro and Alessio Mucciarelli A&A, 681 (2024) A38 Published online: 05 January 2024 DOI: 10.1051/0004-6361/202347547