We propose a method of analysis of spontaneous emission of a quantum emitter (an atom. a luminescence center. a quantum dot) inside or in vicinity of a cylinder. At the focus of our method are analytical expressions for the scattering matrix of the cylindrical nanoobject. https://www.lightemupsequences.com/save-big-Playstation-5-Console-Disc-Version-Playstation-5-Used-Complete-in-box-p30507-amazing-save/