This is the Witch Head nebula:

This is a faint target so I focused a lot of the processing effort on bringing out the details of the nebula. As pictured here, the nebula spans about 3/4 of a light year and the entire nebula spans about 1.25 light years.

The nebula is about 900 light years from us and is lit up by Rigel, which is large, blue star to the upper-right of the nebula.