Feature:1. Observing the Sun: Astronomical telescopes must be fitted with a light filter to observe the Sun. Otherwise they can damage the eyes and the instrument. The sun is so bright that it is easy to find the sun in a mirror, even with the addition of a solar film.2. Applicable Occasion: It can be used to do naked eye observation when visual use, also used for astronomical photography, at the same time, the solar film is not easy to break, suitable for the natural environment for a long time, especially in photography, do not have to be afraid of the wind and rain.3. Good Experience: The solar film will not reduce the contrast of the subject while it attenuates the light and harmful radiation, that is to say, using the solar film as a solar filter can achieve a better image quality, and even easily record the sun's surface of the black activity, the appearance of the solar film on one side of the silver aluminum foil coating, and on the other side of the black PET film.4. Prime Material: This sun film is coated with PET and aluminum foil, sturdy and durable, not easy to break.5. Applicable Models: This solar film is mainly suitable for 6SE, 150SLT, other telescopes please test by yourself.Specification:Item Type: Solar Eclipse Telescope FilterWeight: 140g / 4.9ozMaterial: PET, Aluminum Foil Coating, Plastic.Package List:1 xSolar Eclipse Telescope Filter