CLS EXPLORE SCIENTIFIC 2" fog filter

The Explore Scientific CLS filter enables precise observation of faint deep-sky objects.

One of the biggest obstacles to night sky exploration is the brightness of the night sky from artificial lights, such as streetlights. The night sky is not very dark in the vicinity of towns or cities, which reduces the visibility of objects beyond the enormous solar systems. Depending on the type of celestial object it is possible to increase the contrast dramatically by blocking annoying artificial light. The Explore Scietific UHC filter uses a characteristic property of artificial lighting. Streetlights and lamps glow in special colors - the typical colors of high pressure or mercury lamps. The Explore Scientific CLS nebula filter blocks these colors and therefore increases contrast - light from celestial objects can pass through the filter. The result is surprising: suddenly objects are visible in locations that were previously completely empty without filters. In suburban skies, for example, the large galaxy M101, the Veil Nebula Ngc 6992 or even the bright Dumbell nebula M27, are not clearly visible. By using this filter you can see the nebulae and their structures. Mandatory for all observers.

Explore Scientific hazy filters come with an individual test certificate - the guarantee of receiving a high quality filter.