The OPTOLONG 2" L-eXtreme Deep-Sky Light Pollution Filter from Explore Scientific is the perfect solution for amateur astronomers looking to capture amazing images of the night sky with their telescopes. This filter blocks out unwanted light pollution while allowing a full range of visual and photographic wavelengths to pass through, resulting in brighter, clearer views of galaxies, nebulae, star clusters, and more. With its advanced multi-layer coating technology, this filter is designed to give you