This is the Horsehead and Flame Nebulae, which is an extremely difficult subject from light-polluted Tokyo. I used a 600D (IR filter removed) for color, and a 550D (IR filter and Bayer Matrix removed) filtered to the Halpha frequency for the details. Lens was a 400mm refractor telescope on a tracking mount - 30 RGB shots at 300 seconds - 15 Halpha shots at 900 seconds - Multiple dark frames, flat frames, bias frames to reduce noise and aberrations Combined all in Pixinsight and Lightroom.