I've taken some narrowband data with the 294, I have an Astronomik 12nm hydrogen alpha filter, and I was easily able to pick up data on M42 and the rosette. Here is the first image I ever took with this camera, it is 150x60s exposures at 350 gain through a Astronomik CLS-CCD Filter (my L-2 Filter had not arrived yet) and 168x60s exposures through my Astronomik 12nm Ha filter at 350 gain. I had not taken good calibration frames for this image, so there are some issues there, but let me know what you think of it! I'm going to be trying to do some imaging at 120s and 120 gain to see if I can get better noise reduction using more exposures, and to see if I can achieve a better result. I also happen to have a Lumicon Galaxy filter, but I've only used it once, but if anyone would like to see what my narrowband data looks like, or if anyone would like to see me image a specific target please let me know as I am always learning. Clear Skies!
These photos look like those nicer photos you see via a Mono cam with filter wheels (which i'm too lazy to go that route) but in a single shot color cam, impressive.