SkyWatcher 250mm Solar Filter for Newtonian Telescopes
The Baader Astro Solar™ Safety Film use in these Skywatcher Solar Filters performs as well as high quality plane-parallel glass filters. Metallic coatings are uniformly distributed along both sides of the film’s surface producing excellent color balance from edge to edge.
The film transmits 1/100,000 of visible light (.001%) while blocking out 99.999%of unwanted light. The film significantly decreases harmful ultraviolet rays and infrared light. Baader Astro Solar film has also been declared safe for direct solar viewing by the German National Bureau of Standards for eye safety.
Before you start your viewing, please read through our guide to solar viewing and safety precautions here.