$425.00
Improves the visibility of deep sky objects by selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
It is also highly transparent to main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) as well as SII(672nm)
The filter is suitable for enhancing contrast and details for both visual and photograghic observing in areas with heavy light pollution.
This filter is sized to fit a Nikon camera with a full frame chip.
For a comparison and review of the light polution filters see
Amit Kamble's Comparison
Note: Clip in filters can cause some cameras to have issues with some camera body/lenses