100-200mm Astronomical Telescope Solar Baader Filter Film Objective Lens Sun Filters Metal Cover Skywatcher Accesorio Telescopio _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Astronomical Telescope Solar Baader Filter Film Objective Lens Sun Filters Metal Cover 100-200mm _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Frame Material: Aluminum alloy _x000D_ _x000D_ 5P9990----- _x000D_ OuterDiameter of cover:100mm _x000D_ Optical aperture:75mm _x000D_ For70-192mmobjectivelens _x000D_ Density of film:5.0 _x000D_ _x000D_ 5P9989----- _x000D_ OuterDiameter of cover:120mm _x000D_ Optical aperture:95mm _x000D_ For 90-112mmobjectivelens _x000D_ Density of film:5.0 _x000D_ _x000D_ 5P9998----- _x000D_ OuterDiameter of cover:140mm _x000D_ Optical aperture:115mm _x000D_ For 110-132mmobjectivelens _x000D_ Density of film: 5.0 _x000D_ _x000D_ _x000D_ 5P9997----- _x000D_ OuterDiameter of cover:160mm _x000D_ Optical aperture:135mm _x000D_ For 130-152mmobjectivelens _x000D_ Density of film: 5.0 _x000D_ _x000D_ 5P9965----- _x000D_ OuterDiameter of cover:180mm _x000D_ Optical aperture:155mm _x000D_ For 150-172mmobjectivelens _x000D_ Density of film: 5.0 _x000D_ _x000D_ _x000D_ 5P9896----- _x000D_ OuterDiameter of cover: 200mm _x000D_ Optical aperture:175mm _x000D_ For 170-192mmobjectivelens _x000D_ Density of film: 5.0 _x000D_ _x000D_ _x000D_ Package: _x000D_ 1 PCSolar Baader Filter _x000D_ _x000D_ Use step and precautions: _x000D_ 1. Use a lens cloth or cover to cover the finder lens to avoid operation! _x000D_ 2. Check the Bard film directly at the sun to check if there is light leakage, and it is strictly forbidden to use it. _x000D_ 3. After the test is completed, put the Bard film cover on the light inlet, and check the fixation. _x000D_ When it is intact, measure the light at the eyepiece and operate without abnormal light! _x000D_ 4. During the observation process, don't allow people on the side to move the Bard membrane cover easily. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_