NGC 1491 is an emission nebula found in the
constellation of Perseus. This particular nebula has an 11th
magnitude star in its center. The "reddish" color of this object
indicates that it is heavily composed of HII. Note how the
central star is "blowing" a bubble in the gas that immediately
surrounds it. The winds from this star are so energetic that
they are breaking up the nebula to left of it in this picture.