SH2-104 (Sharpless 104 ) Sharpless 104 is a small but has a great structure for larger telescopes and is fairly bright. It responds to the hydrogen-alpha filter very well so it makes a great HA-RGB image. The H-Alpha channel is so strong you will need to expose the RGB a lot more than usual. There is a lot of nebula that a wide field telescope can capture where the right framing can give the image more contrast as seen here. I did not get much in the oxygen III so I do not think this would make a good color narrowband image. For a complete list of the Sharpless Catalog visit my main site at http://www.sharplesscatalog.com