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Hot Sale Astrodon 1.25" Mounted 3 Nm H-a For 656.3 Nm Series [M58Lq1jl]

$47.99 $153.99 -69%

Astrodon H-a Narrowband Filter The Hot Sale Astrodon 1.25" Mounted 3 Nm H-a For 656.3 Nm Series [M58Lq1jl] is a cutting-edge narrowband filter designed for exceptional performance in astrophotography and research. This filter stands out with its narrow 3 nm bandwidth, which si

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Astrodon H-a Narrowband Filter

The Hot Sale Astrodon 1.25" Mounted 3 Nm H-a For 656.3 Nm Series [M58Lq1jl] is a cutting-edge narrowband filter designed for exceptional performance in astrophotography and research. This filter stands out with its narrow 3 nm bandwidth, which significantly enhances contrast by reducing background signal. With a guaranteed >90% transmittance at the emission wavelength, it delivers the highest signal available, ensuring you capture the faintest details with clarity. The Astrodon Narrowband filters are renowned for their durability and set a new standard in the industry.

Technical Specifications and Performance

The Astrodon 3 nm H-a filter is meticulously crafted to provide superior contrast, making it ideal for long exposures, up to 30-45 minutes, in astrophotography. Its edge blackening and coating to the edge of the part minimize stray light, ensuring optimal performance. The filter's >90% transmittance at the emission wavelength is a testament to its high-quality construction, which is a costly process but guarantees that you are getting the best performance. Our latest filters achieve >95-98% transmittance, surpassing the industry standard.

Practical Applications and Benefits

The Astrodon H-a Narrowband Filter is perfect for astrophotographers and researchers seeking to capture the faintest celestial objects with exceptional clarity. Its ability to minimize halos around bright stars makes it ideal for long-exposure imaging. The guaranteed >90% transmittance ensures that you can take full advantage of the filter's narrow bandwidth without sacrificing signal strength. With Astrodon Narrowband filters, you can expect the best performance in the market, guaranteed. Whether you're imaging nebulae or other celestial phenomena, this filter will bring out the faintest features and enhance your overall imaging experience.

What Our Customers Say

December 29, 2025

Absolutely no complaints!

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December 29, 2025

Absolutely no complaints!

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- Culhwch N..

December 29, 2025

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