I recently received a QHY128C OSC camera to test and since the moon was bright I decided to test how well/IF this OSC camera could capture narrowband (Ha/OIII). The results were surprising and encouraging.
This image of NGC7380 has 4hrs Ha and 4.5hrs OIII captured with the 128C and my CFF250RC. RGB color data was supplied by a QHY163M and SV80ST.
http://buckeyestargazer.net/Images/T.../NGC7380_3.png