What is a telescope filter


When you look through your astronomical telescope at the night sky, telescope filters will help you see more detail. Filters come in many varieties to enhance viewing from light reduction, light pollution filters to different colours and ones that only allow certain wavelengths through to the eye . Some are for visual and others for imaging (or both).

All filters screw in to the eyepiece and generally come in 1.25″ or 2″ sizes

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