SH2-137 (Sharpless 137 ) This nebula although on the fainter side has some nice structure in it. It is a good size nebula for wide field setups. This image is about 90x60 arc minutes in size. The nebula responds good to the hydrogen-alpha filter but I was not able to detect anything with the oxygen III in a 15 minute exposure. The color RGB is very weak even after an hour so blending the H-Alpha into the color will help you create a nice color H-Alpha image. That said this object shows nice detail as a high contrast black and white image. For a complete list of the Sharpless Catalog visit my main site at http://www.sharplesscatalog.com