The Antlia Pro Narrowband (3 nm) SHO Filter Set is a premium solution specifically designed for monochrome CMOS astrophotography camera owners. This narrowband filter set is highly effective even under light-polluted urban skies, featuring an extremely narrow 3 nm bandwidth that blocks other wavelengths.
The Antlia narrowband deep-sky filters offer exceptional contrast, enabling astrophotographers to achieve excellent results even under light-polluted urban skies or in the presence of moonlight. The Antlia H-alpha, OIII, SII 3 nm narrowband filter set guarantees over 88% transmission in the central 1 nm bands (OIII: 500.7 nm, H-alpha: 656.3 nm, SII: 671.6 nm), making it perfectly suited for photographic use with very fast lenses and telescopes. Even at an extreme f/3 focal ratio, there is only minimal transmission loss.
In summary, the advantages of the Antlia narrowband filters are as follows:
- High light transmission and minimal bandwidth serve to maximize contrast
- The steep transmission curve minimizes halos around bright stars
- Can be used in both light-polluted and dark locations
- Allows for longer exposure times even under strong moonlight
- Low transmission loss even when using telescopes and lenses with an F/3 aperture
- The matte black paint on the filter edges prevents internal reflection of stray light
- Excellent optical quality reduces the need for image post-processing
- The filter material is high-quality Schott glass
- They have at least lambda/4 or better surface accuracy, indicating premium quality
- The optical surfaces are coated with anti-reflective and scratch-resistant layers by the manufacturer