Thousand Oaks Solarlite 11" Solar Filter For Celestron 11" SCT S-12500

Thousand Oaks SolarLite Solar Filter (S-12500) – For Celestron 11" SCT

Full-Aperture Solar Safety for the Celestron 11" Schmidt-Cassegrain

If you own a Celestron 11" SCT, you already know it’s built to deliver big-time planetary and deep-sky performance. With the Thousand Oaks SolarLite S-12500 filter, you can bring that same optical muscle to the Sun—safely and in stunning detail.

This full-aperture filter is custom-sized for the front cell of the Celestron 11" Schmidt-Cassegrain, providing a snug, secure fit and a full 125mm clear aperture for bright, contrast-rich solar views. Whether you’re observing sunspots, tracking active regions, or preparing for an eclipse, the S-12500 brings out solar detail your SCT is more than capable of resolving.

The filter uses SolarLite, Thousand Oaks Optical’s proprietary polymer film that combines the sharpness of glass with the durability of a rugged, lightweight material. No pinholes, no creases—just a flat, tear-resistant film mounted in a felt-lined aluminum cell that won’t damage your OTA.

Key Features:

• High-Resolution SolarLite Film: Reveals solar structure, limb detail, and sunspots with sharp contrast

• Custom Fit: Designed specifically for the Celestron 11" SCT front cell

• Durable and Field-Ready: Puncture- and tear-resistant SolarLite film with a flat, wrinkle-free surface

• Protective Mounting Cell: Felt-lined aluminum cell grips securely and protects your scope’s finish

• Lightweight Design: Won’t affect your balance or tracking during observing or imaging

Compatibility:
Fits the Celestron 11" Schmidt-Cassegrain Telescope, including NexStar 11 GPS and CPC 1100 models. The internal diameter of the filter cell is approximately 318mm (12.5"). Always measure your telescope’s front cell to confirm fit before ordering.

SolarLite Film Technology:
After years of research and development, Thousand Oaks Optical has introduced SolarLite—a new solar film that delivers the optical sharpness of glass with the durability and resilience of a polymer. Unlike traditional solar films, SolarLite won’t develop pinholes or surface scratches that could compromise safety. It’s lightweight, so it won’t require rebalancing your optical tube assembly, and it's built to withstand the rigors of field use.

SolarLite offers a consistent yellow-orange solar image across the entire aperture with excellent contrast and uniform density. Its smooth, flat surface ensures sharper views compared to other thin-film filters that often suffer from wrinkles and creases. Tear-resistant, puncture-proof, and more rugged than any other solar film available, SolarLite sets a new standard for safe, high-quality solar observing.

Safety Note:
Before each use, inspect your solar filter for any damage or defects. Never observe the Sun without a securely attached, undamaged filter in place.