NGC1499 in Ha

My first Ha nebula image with my new 3nm Astrodon filter. Although the California Nebula disappeared below my horizon before I had captured all the data I wanted, I was quite impressed with the amount of detail revealed by stacking just four subs. The details where enhanced in PS with a High Pass Filter and HDR toning. LIGHTS: 4 x 1800s Ha. DARKS: 30; FLATS: 40; BIAS: 100 at -20C.