Sketching NGC457 the Owl Cluster at the Eyepiece December 20, 2020 astronomy astrosketchography Cassiopeia ET Cluster NGC457 Open Cluster Owl Cluster +
September 17, 2011 Viewing Session - NGC 457 September 17, 2011 Astromaster 114EQ astronomy Cassiopeia ET Cluster NGC 457 Owl Cluster +