My first light through the Ha filter (apart from holding it up to my eye and watching city lights disappear!
)..... This one is through the DSI Pro II and Skywatcher 100mm f/5 scope, with 13nm Astronomik H-alpha filter, 10x3minute exposures, guided with PHD and DMK/ED80. Outback cooler running a CCD temp at 17.5deg C.
The core has been stretched less than the outer regions - the same image is layered on itself in Photoshop CS2.
I need some more narrowband filters now!