NGC 7000 and IC 5070 in Cygnus
The North America (NGC 7000, left) and Pelican Nebulae (IC 5070, right) count among the greatest nebulae in summer sky. The visible clouds appear as two distinct objects separated by a thick dust lane.
The image is created from narrowband images selecting SII, Ha and OIII spectral lines mapping to red, green and blue know as Hubble Palette. The field covers about 3.5° x 3.5°. The light strike to the right is the reflection of Deneb (alpha Cygni) just outside of the field of view. North is up in this image.
[description from ‘A Year in the Life of the Universe’ by Gendler]