Light Pollution Filter Nikon D5300

The hong kong based company cyclops optics is selling light pollution filters for nikon full frame cameras.
Light pollution filter nikon d5300. Optolong uhc ultra high contrast is a light pollution filter for use in severely light polluted urban area. This filter has a proven track record of consistent results under city light pollution and one of the first light pollution filters i used with my camera. Cyclops optics is one of the resellers in hong kong. Idas d2 clip in fliter for nikon d5300 d5500 and d5600 dslr cameras.
H alpha hα is a specific deep red visible spectral line in the balmer series with a wavelength of 656 28 nm in air. A hydrogen alpha filter is an optical filter designed to transmit a narrow bandwidth of light generally centred on the h alpha wavelength. H alpha light is important to astronomers as it is emitted by many emission nebulae. It selectively enhances emission from nebulas and suppresses the transmission of light pollution sources.
52mm ultimate nikon lens filter accessory bundle uv cpl fld nd2 nd4 nd8 and 2x2 telephoto lens macro lens for nikon d3300 d3200 d3100 d3000 d5300 d5200 d5100 d5000 d7100 d7000 dslr camera 99 99 99. The filter can be clipped on on top of the sensor in order to block light pollution for astrophotography.