Helios Glass Telescope Solar Filter by Seymour Solar (4" (101mm). Fits Optical Tube Diameter 3 5/8" (93mm) to 3 7/8" (98mm))

Helios Glass Telescope Solar Filter by Seymour Solar (4" (101mm). Fits Optical Tube Diameter 3 5/8" (93mm) to 3 7/8" (98mm))

• Discover the secrets of the sun with our premium solar filter, which is specially designed for telescopes. You can safely observe and photograph the sun’s surface and features, such as sunspots and eclipses, with our ND5-rated filter that blocks 99.999% of the sunlight.
• Enjoy the contrast and clarity of the sun’s image with our Helios Solar Glass, which is a high-quality glass that has a reflective coating on both sides. The glass is mounted into an aluminum outer cell, which is durable and lightweight, and fits most telescopes.
• Attach the filter easily and securely to the objective lens of your telescope with our clamp-on design. The filter is secured and centered to the telescope with nylon thumb screw(s) and felt tabs, which prevent any damage or scratches to your telescope.
• Capture the stunning phases of the total solar eclipse with our premium solar filter, which is specially designed for Capture the stunning phases of the total solar eclipse with our premium solar filter, which is specially designed for telescopes. You can safely view and photograph the sun’s partial and annular phases with our ND5-rated filter that blocks 99.999% of the sunlight.
• Experience the thrill of totality with our premium solar filter, which is easy to remove and attach to your telescope. You can quickly take off the filter when the moon completely covers the sun’s bright face, and enjoy the spectacular sight of the corona and the chromosphere. You can also put the filter back on when the sun begins to reappear, and continue to observe the rest of the eclipse.