Baader AstroSolar Filter

This filter provides a neutral white image of the sun. Unlike some other materials that tint the view yellow or orange, this neutral balance allows you to see the sun's true colors, making it easier to distinguish fine details like granulation and sunspots.

The filter features adjustable centering bolts that accommodate a range of telescope sizes. It is designed to fit outside diameters between 200mm and 240mm, or inside diameters between 230mm and 270mm, so be sure to measure your telescope's aperture carefully before purchasing.

Solar filters are sensitive to heat, which can cause the film to warp and degrade image quality. The temperature-compensated cell ensures the filter material remains stress-free and flat, maintaining high-resolution performance even as the temperature changes during your observation session.

Yes, it is rated at ND 5.0 density, which is the industry standard for safe visual solar observation. It is equally effective for solar photography, providing the necessary protection for your eyes and your camera sensor.

The filter includes a set of safety straps specifically designed to keep it firmly in place. Always use these straps in addition to the adjustable centering bolts to prevent the filter from accidentally slipping off during use.