Named in honor of Monsignor Ronald Royer, whose work in astronomical photography and variable-star observation has been a life-long passion. For over twenty years he has contributed to astronomical research and has exemplified the ideals of amateur astronomy by sharing his telescopes and enthusiasm with hundreds of students, children of his parish and the general public. Royer is one of the true pioneers of tricolor astrophotography, having first applied this technology to illustrate the different colors of the gas and dust tails of Comet West (1976 VI) {see also planet  (2022)}. (M 21957) _ _.