Thousand Oaks Full Aperture Solar Light Filter Celestron C5, Nexstar 5; Meade Etx-125; Astro-Tech 111Edt

Thousand Oaks SolarLite Solar Filter – For Celestron C5, NexStar 5, Meade ETX-125 & Astro-Tech AT111EDT

Versatile Solar Protection for 5" SCTs and 111mm Refractors

This Thousand Oaks SolarLite filter is precision-sized to fit some of the most popular mid-sized optical tubes on the market—namely the Celestron C5, NexStar 5, Meade ETX-125, and the Astro-Tech AT111EDT refractor. Whether you’re chasing a solar eclipse or observing active sunspot regions, this rugged full-aperture filter offers safe, high-contrast solar performance for both visual observing and imaging.

Built around Thousand Oaks’ exclusive SolarLite film, the filter combines the optical sharpness of glass with the resilience and field-friendliness of polymer. It’s tear-resistant, puncture-proof, and designed to stay flat—no wrinkles, no creases, and no pinholes.

The felt-lined aluminum cell ensures a secure grip that won’t scratch or mar your telescope’s finish, while its lightweight design means your scope remains balanced and easy to handle in the field.

Key Features:

• High-Resolution SolarLite Film: Reveals solar granulation, limb detail, and sunspot structure in sharp, yellow-orange contrast

• Durable & Lightweight: Tear- and scratch-resistant polymer film built for years of safe observing

• Custom Fit: Sized for popular 5" Schmidt-Cassegrains and 111mm-class refractors

• Protective Mounting Cell: Felt-lined aluminum cell provides a firm, non-damaging grip

• No Balance Adjustment Needed: Lightweight design won't throw off your setup

Compatibility:
Fits optical tubes with an outer diameter of approximately 127mm to 130mm (5.00" to 5.125"), including the Celestron C5, NexStar 5, Meade ETX-125, and Astro-Tech AT111EDT. Be sure to measure your telescope’s front cell or dew shield to confirm fit.

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.