The Orion Safety Film Solar Filter with 4 inch Internal Diameter is an affordable Polymer Solar Filter, giving an attractive yellow-orange solar image, for use with binoculars and telescopes with lens cells around the 4-inch outer diameter. The exact internal diameter of this filter is 100mm.
- Affordable alternatives to pricier aluminum-cell glass solar filters
- Each features black-polymer film filter material that displays high-contrast, clear views of the Sun
- E-Series Safety Film Solar Filters let you see the Sun in a natural, yellow-orange color
- Stronger and more durable than thinner film filters
- See sunspots, eclipses, and more!