The Sh2-134 complex in Cepheus is a vaste emission nebula that extends around the star λ Cephei . It is characterized by a diffuse Ha and Sii emissions and a much weaker Oiii region that surrounds the star.

The image is the result of a two panels mosaic for a total of 26hrs of exposure (4.5hrs of Ha, Sii and Oiii for each panel) combined in narrowband Hubble palette

High resolution here

Sh2-134 emission nebula in Cepheus

Caprile Observatory

Caprile Astronomical Observatory, Astrophotography, located in Tuscany (Italy) countryside. A photographic journey across the marvels of the universe | Galaxy | Nebulae | Deep Sky Objects