The Antlia Pro Narrowband (3 nm) SHO Filter Set is a premium solution designed specifically for owners of monochrome CMOS astronomy cameras. This narrowband filter set performs excellently even under light-polluted urban skies, featuring an extremely narrow 3 nm bandpass while blocking all other wavelengths.
Antlia narrowband deep-sky filters deliver exceptional contrast, enabling astrophotographers to achieve excellent results even under light-polluted city skies or in the presence of moonlight. The Antlia H-alpha, OIII, SII 3 nm narrowband filter set guarantees over 88% transmission within the central 1 nm ranges (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, transmission loss remains minimal.
In summary, the advantages of Antlia narrowband filters are as follows:
- High transmission and minimal bandwidth maximize contrast
- The steep transmission curve minimizes halos around bright stars
- Suitable for use in both light-polluted and dark locations
- Allows for longer exposure times even in strong moonlight
- Low transmission loss even when used with f/3 telescopes and lenses
- The matte black painted edges of the filter glass prevent internal reflections from stray light
- Excellent optical quality reduces the need for image post-processing
- The filters are made from high-quality Schott glass.
- They feature at least lambda/4 or better surface accuracy, placing them in the premium category.
- The optical surfaces are treated by the manufacturer with anti-reflective and scratch-resistant coatings