Safe daytime solar observation - Blocks 99.9% of harmful solar radiation to let you view sunspots, flares, and solar granulation safely through your telescope without eye damage or risk to equipment. Retractable design for quick adjustment - Easily slide the filter on or off for fast transitions between solar and non solar observation, enabling smooth switching for mixed skywatching or educational demonstrations. High quality optical film or glass - Crafted from precision light reducing material to deliver crisp, clear solar imagery with minimal distortion, suitable for high contrast solar photography and time lapse video capture. Worldwide compatibility for multiple telescope types - Designed to fit a wide range of refractor and reflector telescopes, making it a versatile addition for both beginners and experienced stargazers. 2-3 use scenarios - Daytime solar sessions: observe sunspots, flares, and granulation safely and in detail while maintaining telescope performance. - Educational demonstrations: quickly switch between solar and regular celestial views during classroom or outreach events. - Solar photography and time-lapse: capture high-contrast solar imagery with minimal distortion for stills and time-lapse videos. How to use (quick guide) - Attach to compatible telescope objective or where recommended by your scope’s accessories. - Slide the filter into place for solar viewing; slide it away when observing non solar objects. Ensure proper alignment and secure handling to protect your eyes and equipment.