SH2-28 (Sharpless 28 ) This nice size nebula is usually imaged with the lagoon and trifid nebulae along with a few others. This nebula responds to the hydrogen-alpha very well but very weak with standard RGB color filters. So if you do an RGB color you will need a long exposure time. I blended the H-Alpha channel with the red and blue image to create this HA-RGB image. The sulfur II filter does well here but lacks with the oxygen III. For a complete list of the Sharpless Catalog visit my main site at http://www.sharplesscatalog.com