Explore Scientific 1.25" H-Alpha Filter 12nm

The H-Alpha 1.25" 12nm filter from Explore Scientific is an indispensable tool for astrophotographers looking to capture emission nebulae, even under artificially lit skies. This filter blocks almost all other colors, only allowing the red hydrogen emission line to pass through. It effectively eliminates disturbing light from mercury and sodium vapor lamps, revealing invisible details to the naked eye. With a 12nm bandwidth, this filter improves contrast and clarity of deep-sky objects, allowing for photography of nebulae that appear invisible without a filter. Ideal for urban astrophotographers, it guarantees surprisingly high-quality results despite light pollution. Each filter is delivered with an individual test certificate to ensure its high quality.