These
are safe full aperture (sometimes referred as clear aperture) solar
filters. This means that it allows the most light possible into the
telescope because it allows the full aperture of your telescope to be
viewed. The full aperture allows the best possible daytime viewing when
there is minimal atmospheric turbulence. If turbulence is present a mask
can be put over the end of the filter to effectively reduce the
aperture.
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 clear aperture is made with high quality hand selected and
inspected reflective coated glass. This is the highest quality, durable,
glass, full aperture 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.
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.