Owl Nebula M97 in Ursa Major

The Owl nebula is one of the largest of the planetary nebula. The exact distance to this nebula is uncertain but it is likely about 3000 light years away and has a diameter of around 3 light years away. The central star is a magnitude 14 white dwarf with a temperature of 85,000 deg K.

If you put the mouse over this image, you will also see the galaxy M108 (and, just barely, the galaxy NGC3594).

Images taken with TEC-140 Telescope mounted on Losmandy G11 mount. Camera used was a Canon EOS20D used at prime focus.

Five 3 minutes exposures dark compensated, aligned and stacked, background removed and Digitaly Developed in ImagesPlus 2.10.