NEODYMIUM filter dramatically improving sky contrast - suitable for smaller apertures also.
This new design Moon and Sky Glow filter now incorporates IR-Cut.. Great for CCD imaging as well as visual.
Transmitts a maximum of light while blocking unwanted skyglow and many street light emissions. Especially effective on small economy telescopes which cannot benefit from expensive narrow-band nebula filters due to the huge light-loss involved.
Unique selective blocking feature of the NEODYMIUM element greatly reduces glare, without reducing recognition of important colour and brightness variations.
Transmission within the selected wave bands exceeds 95%.
Fits all standard filter threads and longs to be combined with an UV/IR-Cut-Filter for all CCD and digital camera work.
This combination works extremely well due to cutting all unfocused light. Planeoptically polished it retains full image resolution even at highest magnification way above 200 times, or with eyepiece projection work even in front of a binocular viewer..
Ultrahard and durable Ion-beam hardened coatings,may be cleaned anytime without fear. No image degradation as with flame polished filters.
Very affordable Non-vignetting filter cells,larger in aperture than any competing design, featuring a CNC milled crown for ease of handling and attachment.