ZWO 31mm H-Alpha 7 nm Filter
The Hydrogen-Alpha emission line is dominant among star-forming regions. Responsible for the red color in many nebulae, Hydrogen-Alpha (or H-Alpha) light is generated by hydrogen atoms is often the most popular narrowband emission line for astrophotographers to enhance in their images. Explore one of the main building blocks of our universe by imaging in Hydrogen-Alpha with a ZWO ASI camera, a filter wheel, and this narrowband filter!
The ZWO Ha 7nm 31mm Filter is unmounted. ZWO narrowband filters are fine-optically polished to reach an accuracy of 1/4 wave. Their performance is further enhanced by multiple layers of anti-reflection coatings.
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