Baader Planetarium Solar Filter

Yes, this filter features an OD 5.0 safety film, which is the industry standard for safe visual solar observation. It blocks 99.999% of sunlight, allowing you to view the sun directly through your telescope without damaging your eyes or equipment.

The cell is designed to expand and contract at the same rate as the filter material itself. This prevents the film from becoming pinched or stretched as temperatures change, which eliminates astigmatism and ensures your solar images remain sharp and distortion-free.

The filter is highly versatile thanks to its adjustable centering bolts. It includes both 10mm and 20mm bolts, allowing you to customize the fit to a wide range of telescope tube diameters securely.

While the centering bolts provide a snug fit, the safety straps are a critical redundancy feature. We strongly recommend using them every time you observe to ensure the filter cannot accidentally slip off the telescope tube, especially in windy conditions.

Absolutely. The optical quality of the Baader film is excellent for both visual use and solar photography. It provides a neutral, natural-looking solar image that works well with most standard camera setups.