Two filters made into one for maximum brightness Combines Fringe-Killer with Moon & Sky glow for Semi-APO contrast with refractors Non-ageing sealed coating edges Combination of "Neodymium Moon & Sky glow" and "Fringe Killer" Filters Time and time again we were made aware of customers who were combining our Neodymium Moon and Sky glow filter with our Fringe Killers to deliver amazingly colour-corrected images to achromatic refractors. This combination however did produce reflections. After analyzing these reports we developed our Baader Semi-APO filter with IR blocker, a reflection-free combination of the Moon & Sky glow with a stronger coating of the Fringe killer. This result was a virtually colour-neutral image without the blue and red halos (violet fringing) and an increase to image contrast. Specifications decorateTable('product-attribute-specs-table') Manufacturer Baader Planetarium Weight (kg) 0.062 Transmission Range multiple bands (see spectral image) Filter Thickness (without cell) 1 mm AR-Coating Phantom Coating® Group, Plane-optically polished Filter Usage CCD, Color Correction, IR-Cut Filter mounted Mounted (LPFC 6mm) Type of Filter Band-pass Single or Set? Single Filter Filter shape round
