Mackey, AlasdairFerguson, A. M. N.Irwin, M. J.Martin, N FHuxor, ATanvir, Nial RChapman, S. C.Ibata, Rodrigo ALewis, Geraint FrancisMcConnachie, Alan W2015-12-100035-8711http://hdl.handle.net/1885/60654We report on deep imaging of a remote M31 globular cluster, MGC1, obtained with Gemini/GMOS. Our colour-magnitude diagram for this object extends ∼5 mag below the tip of the red-giant branch and exhibits features consistent with an ancient metal-poor stKeywords: Galaxies: individual: M31; Globular clusters: general201010.1111/j.1365-2966.2009.15678.x2016-02-24