Baader AstroSolar Filter

This filter provides a neutral white solar image. Unlike some glass filters that cast a yellow or orange hue, the AstroSolar film delivers a true-color view, which is ideal for observing fine details like granulation and faculae.

The filter features adjustable centering bolts that allow you to customize the fit for your telescope's outer diameter. It is designed for a clamping range of 300mm to 340mm, so be sure to measure your telescope tube's outer diameter before purchasing.

Solar filters are often exposed to direct heat, which can cause materials to expand or warp. The temperature-compensated cell prevents the filter material from becoming stressed or distorted, ensuring your image remains sharp and free of astigmatism throughout your viewing session.

Yes, this filter uses ND 5.0 AstroSolar Safety Visual Film, which is specifically rated for both direct visual observation and solar photography. It blocks 99.999% of sunlight, providing the necessary protection for your eyes and your camera sensor.

The safety straps are a critical redundancy measure. They ensure the filter remains securely attached to your telescope tube, preventing it from accidentally falling off or shifting during use, which is essential for maintaining safety while observing the sun.