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New Edition Antlia Pro Highspeed Ultra Narrowband 3nm H-alpha Filter - 2" Save 55% + Free Ship [f8uEL19N]

$60.99 $195.99 -69%

New Edition Antlia Pro Highspeed Ultra Narrowband 3nm H-alpha Filter - 2" Save 55% + Free Ship [f8uEL19N]Introducing the ANTLIA PRO HighSpeed Ultra Narrowband 3nm H-alpha Filter, a cutting-edge filter designed for astronomers and astrophotographers seeking exceptional image quality. This 2" mo

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New Edition Antlia Pro Highspeed Ultra Narrowband 3nm H-alpha Filter - 2" Save 55% + Free Ship [f8uEL19N]

New Edition Antlia Pro Highspeed Ultra Narrowband 3nm H-alpha Filter - 2" Save 55% + Free Ship [f8uEL19N]

Introducing the ANTLIA PRO HighSpeed Ultra Narrowband 3nm H-alpha Filter, a cutting-edge filter designed for astronomers and astrophotographers seeking exceptional image quality. This 2" mounted filter, with its 3.0nm bandwidth and pre-shifted center wavelength, is tailored for high-speed imaging systems. Its specialized design ensures that telescopes with focal ratios between f/2.6 and f/3.6 achieve significantly stronger and more contrasted images in astronomy imaging compared to standard Pro versions.
  • Optimized for High-Speed Imaging: Pre-shifted center wavelength for improved signal-to-noise ratio in fast telescopes.
  • Superior SNR: Achieves high signal acquisition for telescopes with focal ratios between f/2.6 and f/3.6.

Product Specifications and Technical Details

The ANTLIA PRO HighSpeed Ultra Narrowband 3nm H-alpha Filter boasts a narrow 3nm bandwidth and high transmittance of over 90% for Ha, SII, and OIII. With a central wavelength of 657.5nm for hydrogen-alpha, 501.9nm for oxygen III, and 673.6nm for sulfur II, it delivers exceptional performance. The filter is also designed with a blocking specification of ≥OD5 @ 300-1000nm, ensuring an excellent signal-to-noise ratio and effective cutoff rate to minimize interference from other wavelengths. Its 2mm thickness and single substrate construction further enhance the optical reliability and minimize internal reflections.
  • High Transmittance: Over 90% transmittance for Ha/SII/OIII for maximum contrast.
  • Blocking Specification: ≥OD5 for an excellent signal-to-noise ratio and effective cutoff rate.

Applications and Benefits

The ANTLIA PRO HighSpeed Ultra Narrowband 3nm H-alpha Filter is ideal for astrophotography enthusiasts, professional astronomers, and anyone looking to capture stunning images of emission nebulae, planetary nebulae, Wolf-Rayet nebulae, and supernova remnants. Its ability to extend imaging time during moonrise makes it a valuable tool for light-polluted areas and dark sites. With superior optical reliability and a 3-year warranty against delamination, this filter is a reliable investment for anyone serious about astrophotography.
  • Wide Range of Applications: Suitable for astrophotography of emission nebulae, planetary nebulae, and supernova remnants.
  • Extended Imaging Time: Perfect for use in light-polluted areas and dark sites during moonrise.

What Our Customers Say

January 18, 2026

Absolutely no complaints!

A very good product, I do recommend.

- Stephanie R..

January 18, 2026

Absolutely no complaints!

The performance is truly remarkable.

- Declan V..

January 18, 2026

Absolutely no complaints!

I'm happy with my product.

- Tanya B..

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