Solar Filter Sun Film Membrane 50mm Astronomical Telescope Lens Cap

Features: These solar filters will work as a cap to put on your telescope objective tube. It would be more accurate if you measure the tube diameter, as different telescope with same nominal objective diameter may have different tube size. The solar filter is for telescopes tube front end diameter 50mm. Main performance: observation of sunspots, solar eclipse and other astronomical scenes. Safely observing the sun without damaging your eyes. Specification: Color: black Material: PVC Applicable models: 50mm caliber universal Weight: approx. 17g How to observe the sun? 1. Take off the object lens cap, 45 degrees anascope and eyepiece. 2. Pointing at the sun until there"s light coming out of the tube. 3. Install the 45 degrees anascope and eyepiece and solar filter. Package List: 1 * 50mm Solar Filter (other items in picture are props.)