Optolong CLS-CCD Filters Size:EOS APS-C 1x Raised finder stalk to

1x Raised finder stalk to clear the tube rings and dewshield

With the Ha and OIII filters these can be used to achieve great narrowband results using the Bi-Colour process

perfect for faint structures in star-crowded regions of the Milky Way

outdoor movies

the filter will not reduce your telescope's optical performance

Optolong CLS-CCD Filters Size:EOS APS-C 1x Raised finder stalk toThe CLS CCD broadband filter is designed to improve the visibility of various deepsky 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). Together with the highly transparent in main nebula