Thank you for your continued support of Thousand Oaks Optical.
As we transition to new ownership, our website and operations are temporarily limited. We are currently unable to process or fulfill large orders, and some orders may take longer than usual.
If you need products urgently—or plan to place a large order—please email us before ordering. We’ll be happy to check availability with our authorized dealers.
We sincerely apologize for the inconvenience and appreciate your patience as we work to restore normal operations.
Full Aperture (Solarlite Thin Film Polymer)
$69.00 – $199.00Price range: $69.00 through $199.00
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. Also available in sheets. Guaranteed 15 years.
Please use the instructions below to determine the correct Part # for your application.
Our production lead time found on our ordering information page
Download Printable Solar Filter Instructions
Free ground shipping on all U.S. deliveries, excluding bulk filter material and shipments to U.S. territories.
Description
The +EF part number includes extra felt to accommodate smaller diameter ranges. It’s important to note that the +EF designation will not appear on the filter’s box packaging.
What Size Do I Order?
To ensure the best fit for your application, it’s essential to measure the outside diameter (O.D.) of your telescope or lens. We cannot recommend a filter size based on the model number of your telescope/lens, so please take the following steps to find the correct size:
Alternatively:
The solar filter comes with self-adhesive felt for custom fitting, but you can also find additional felt, Velcro, or other materials at most fabric or home improvement stores.
Please use the size chart below to select the appropriate size for your application. The chart lists sizes by clear aperture (filter size in the center of the cell) and O.D. of the aluminum cell (inside cell wall that fits over and around telescope tube). Please note that we cannot take orders for felt.
OPEN TRUSS TELESCOPES:
If the solar filter is to be used on an open truss telescope, the open area from front (secondary mirror) to back (primary mirror) must be covered. No direct sunlight should enter the optical path or the concentrated beam from the mirror can focus on the back of the solar filter film and cause damage and void warranty.
Additional information
Related products
Bulk Filter Material
$4,900.00 Select options This product has multiple variants. The options may be chosen on the product pageSolarLite Filter Sheets
$52.00 – $385.00Price range: $52.00 through $385.00 Select options This product has multiple variants. The options may be chosen on the product pageSilver-Black Polymer Sheets
$32.00 – $160.00Price range: $32.00 through $160.00 Select options This product has multiple variants. The options may be chosen on the product page