A hightened section of the Witch's Broom Nebula

This image shows a small portion of the Veil Nebula known as the Witch's Broom Nebula.

The highlighted portion is an image taken with the Wide Field and Planetary Camera 2 (WFPC2) on board the NASA/ESA Hubble Space Telescope. The colour is produced by composite of three different images. The different colours indicate emission from different kinds of atoms excited by the shock: blue shows oxygen, green shows sulphur, and red shows hydrogen.