Thousand Oaks 4.25" Solarlite Film Solar Filter

Thousand Oaks SolarLite Film Solar filters allow you to check out the intricacies of sunspots against a majestic yellow-orange solar tapestry.

The Thousand Oaks SolarLite has proven itself to be a capable replacement for the glass filters that Thousand Oaks has produced over the decades.  The great American eclipse of 2017 put the product to the test and it passed with flying colors.

After years of R&D we have developed a new solar film that has the optical quality of glass with the advantages of impregnated polymer. Will never develop pinholes or scratches that can let in light and ruin a filter. Other advantages: lightweight and does not require re-balancing tube assembly, will not break, consistent yellow-orange solar image, even density with any aperture, flat surface compared to other thin film filters that have wrinkles and creases. Will not tear or puncture. Stronger than any other solar film on the market.

The O.D. of our cells needs to be at least 1/16″ larger than the OD of the telescope tube or binocular barrel etc. Choose the closest cell O.D. that is LARGER than the O.D. measurement of your instrument. Example: Part number S-4250 (4 1/4″ O.D.) would fit instrument O.D. measurements from 4″ to 4-3/16″. Do not choose a size the same as your O.D. since it will be too tight. Self adhesive felt is included for custom fitting. If your application requires additional felt; Velcro, felt, and other types of material can be found at most fabric or home improvement stores. We cannot take orders for felt.

Clear Aperture: 90mm or 3.50"

Cell OD:  108mm or 4.25"

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