Planetary nebulae

Notizen: This is a "colour" version of the planetary nebula PK164+31.1 in Lynx. I took the Halpha image for the red channel, OIII for both green and blue and OIII+Ha for luminance. Taken from the middle of Berlin with an 8"LX200 at f/4.4, MX716 camera, video autoguider, 30x10 minutes Halpha, 20x10 minutes OIII+IR block.