ANTLIA SII 3nm PRO ULTRA NARROWBAND FILTER Size:31mm Length 260 mm

Length 260 mm

Optical thickness 1

The Prima Luce Lab dew heater for 300mm tubes can be tightly locked around your optical tube by using the velcro patch

The upgrade kit does not account for the extra thickness of the ARCO rotator

This is a value often undisclosed by other filter producers although it is critical to darken the sky background and minimise the halos around the stars

ANTLIA SII 3nm PRO ULTRA NARROWBAND FILTER Size:31mm Length 260 mmThe new Antlia S II 3nm PRO ultra narrowband it is the latest filter produced by Antlia. This filter boosts the contrast of emission and planetary nebulae, Wolf Rayet nebulae and supernova remnants for professional results, even under a bright sky affected by light pollution. The 3. 0 nm band pass is only 1% of the entire visible spectrum, increasing the signal to noise ratio and delivering high contrast images and extremely dark backgrounds. To even