NGC 884 & 869 Published December 13, 2014 at 2000 × 1337 in Open Clusters NGC 884 & 869: Double Cluster Image & Equipment Details: Date: 10/12/13 Calibrated with bias, flat, and dark frames Imaging Scope: Orion ED80 Apochromatic Doublet Imaging Camera: Canon 1100D Annotated Image: