AstroZap Off Axis Glass Solar Filter

These are safe off axis solar telescope filters. An off axis solar filter blocks light into the telescope by only allowing light through a small portion of glass that is off center. By reducing the aperture the image is not darker but visibility of daytime atmospheric turbulence is reduced. The off axis is less expensive than the full aperture solar filters.

This premium solar filter has an aluminum cell that is secured and centered to the tube end of the telescope with nylon thumb screws and felt padding. The aperture portion of the filter is to be positioned as close to 12 o’clock as possible. The off axis aperture is made with high quality hand selected and inspected reflective coated glass. This is the highest quality, most durable, off axis aperture, glass solar filter on the market. The sun is viewed in a natural yellowish-orange image. The filter can be used for direct viewing through the telescope or for photography. You should be able to see sunspots, granulation, and of course a solar eclipse.

This filter is new in the box in plastic. The filter box is foam lined for protection and shock absorption during handling. It is durable enough to store the filter while not in use. With the filter come instructions for use and care.