Photograph of 'Praesepe' the beehive star cluster (M44),...
Photograph of 'Praesepe' the beehive star cluster (M44), tak
Photograph of 'Praesepe' the beehive star cluster (M44), taken by Isaac Roberts using a twin telescope (20-inch reflector & 7-inch refractor) by Howard Grubb of Dublin. Taken with an exposure of 90 minutes on 13 February 1891 at his observatory & home at Crowborough, Sussex.