Planetary nebulae

Notizen: This picture of M97 is combined from Halpha and OIII filtered shots, which gives an "easy" way of colour imaging for planetary nebulae. Taken from the middle of Berlin with an 8" LX200 at f/6.3, MX716 camera, video autoguider, Astronomik Halpha filter for 10x10 minutes, Astronomik OIII filter for 17x10 minutes.