The above image includes 2 separate nebulae listed in the Sharpless catalog of HII regions.  They are members of a complex of 4 HII regions consisting of Sh2-231/232/233 & 235 ^[1].  The large nebula in the image is cataloged Sh2-231 and the small nebula is Sh2-233.  They are located in the direction of the Auriga constellation at an approximate distance of 1800 parsecs^[1] (⁓5,900 light-years) from the Earth.  These objects are associated with a giant molecular cloud, G174+2.15^[1], in the Perseus Arm of the Milky Way.

The image above is oriented with north to the top and east to the left.  It was assembled as a bi-color image using narrowband filters.  Ha filtered data was mapped to Red and OIII data mapped to Green and Blue.  Stars were overlaid with data from a separate RGB filtered image.  This method produces a near true color image.

Image processed in PixInsight and Photoshop.

Reference
¹Galaxy Map: http://galaxymap.org/cat/view/sharpless/232