I used a 6" apochromatic refractor, precision mount, and a narrowband filter that only allows light from the 656.3 nm Hydrogen-alpha bandpass to enter an astronomy camera, cooled to -10C to capture 3hrs and 20minutes worth of exposure time to create this image. The image itself is monochrome and the color was added in processing. The light in the 656 band would appear as red, approaching deep red