Andoer Film Solar Filter for 164‑190mm Objective Lens Astronomical Telescopes Solar Filters for Eclipse

Feature: 1. Solar Film Substance: It is actually a solar filter, but different from a solar filter. Astronomical telescopes must add a filter to observe the sun. Otherwise, it will damage the eyes and instruments. The sun is so bright that it is easy to find the sun in a telescope, even with the addition of a solar film. 2. Advantages of Solar Film: The advantage is that the solar film is not easy to break, suitable for natural environment for a long time, especially in photography, do not have to be afraid of the wind and rain. When the film is dirty, it can also be cleaned casually with clean rags and paper towels, and even water washing is not a problem. 3. PET Coated Aluminum Foil Film: This solar observation film is called solar film i