For producing striking, high-contrast color CCD astrophotography of emission nebulae with a monochrome CCD camera, you should use extra-narrowband filters. The 1.25" Orion Extra-Narrowband Hydrogen-Alpha filter is one of a set of three filters.
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At Orion, we are committed to sharing our knowledge and passion for astronomy and astrophotography with the amateur astronomy community. Visit the Orion Community Center for in-depth information on telescopes, binoculars, and astrophotography. You can find astrophotography "how to" tips and share your best astronomy pictures here. Submit astronomy articles, events, and reviews, and even become a featured Orion customer!