Object: Planetary nebula NGC 6905 Constell: DEL RA: 20h 22.43m Decl: +20° 6.7' Epoch: 2000 Mag: 11.9m (p) Size: 39'' Type: 3+3 Observer: Jere Kahanpää Obs. place: Jyväskylä, Finland Date/Time: 17./18.9.1993, 00.30 Telescope: N 205/1000 Magn: 266x Filter: Field: 11' NE Lim.mag: 5.5m Background sky: 2-3 Seeing: 2-3 Weather: Cold, thin mist Brightness: 3 Alt: 35° Description: A large planetary nebula. Round with double shell structure. The outer shell diameter is about 30'' and the inner and much brighter one spans 15''. The inner shell is well defined while the outer one is quite diffuse. There is a faint (13.5m) star on the S edge.