Here is an attempt at narrowband imaging with the 10″ f4.8 last night. The light frames total 115 minutes. The palette used is R and L = H alpha, G = 0III, B = SII. Almost all the nebula information is in the H alpha, there’s just a trace of SII emission and little trace of OIII, hence it’s basically red. Processing was in Nebulosity and Photoshop CS4 with Neat Image plugin. (Click to enlarge image)