DETAILS
Exposure: 50×600″ @ ISO 800
Telescope: William Optics Megrez 88FD with Borg DG-L
Filter: Baader H-alpha 7nm 2″
Mount: Skywatcher EQ6 Pro
Camera: Modded Canon 350D in cooler box
Date: 15th and 16th August 2009
Location: Cabrera de Mar (suburban site near Barcelona)
Comments: I needed a lot of exposures to get an acceptable SNR in the fainter parts of the nebula and be able to pull details of it.

The young stellar association Cepheus OB4, in which the oldest stars formed some 5 million years ago, lies in a region of bright nebulosity known as Cederblad 214 and NGC7822. The fainter northern arch of nebulosity, at the left part of the image, is NGC 7822 and the brighter southern cloud, at the center of it, is Cederblad 214 or alternatively Sharpless 171.  The Molecular Cloud Complex Which Gave Rise to the visible nebula is known as the radio source W1 (Westerhout 1), one of the largest molecular cloud Complexes in the Milky Way. The molecular cloud is known to have a northern and southern component which corresponds well to the structure of the visible HII region. This H II region is located in the constellation Cepheus at a distance of about 6000 light years from the Earth.