Solar Filters

A telescope solar filter makes it possible to safely observe the Sun, our nearest star, revealing sunspots, solar granulation and the dramatic progress of solar eclipses and planetary transits. Always use a certified full-aperture solar filter that covers the front of your telescope; never look at the Sun through unfiltered optics.

Explore Scientific's Sun Catcher solar filters are designed to fit over the front of a wide range of telescopes, from small refractors to larger reflectors, providing safe white-light views of the Sun. Solar observing is a rewarding daytime activity, especially as the Sun cycles through periods of increased sunspot activity. Whether you are preparing for an eclipse, teaching students about the Sun or simply enjoying daily solar observing, a quality telescope solar filter is an essential accessory.

Choosing the right solar filter depends on your telescope's outer diameter; the filter should fit snugly so it cannot be knocked off. Always cover or remove your finder scope when observing the Sun. Inspect the filter material before each use for scratches or pinholes. With a properly fitted solar filter, your telescope becomes a safe and fascinating tool for observing the ever-changing surface of the Sun.