- Optimized Sun Film for Telescopes: Specifically designed for telescope diameters of 80/100/120/140/160/180/200/220/250 mm, this sun film features a metal pressure ring that guarantees a secure fit without the need for glue or adhesives. - Durable Construction: Crafted with a robust metal outer ring and pressure ring, this sun film is resistant to deformation, ensuring it remains reliable through regular use and offers long-lasting protection. - Safe Solar Observation: The sun film is equipped with a double-sided silver solar film with a density of 5.0, effectively blocking harmful solar radiation. It allows for safe and clear observation of the sun. - Versatile Applications: Ideal for use with cameras, monoculars, binoculars, astronomical telescopes, and birdwatching telescopes, this sun film is essential for anyone keen on solar observation. - Safety First: It is crucial to install the solar film before observing the sun to protect your eyes from permanent damage. Check the film for light leaks before use and discontinue if any issues are found. This sun film is a necessary tool for astronomy enthusiasts and anyone interested in safely observing the sun. Its durable, secure design and ability to fit a range of telescope sizes make it a reliable choice for both amateur and professional use.