Member Exclusive Daystar Erf 100mm With 150mm Cap # E-150n100 Pro Version [HET1el6V]

DayStar ERF 100mm with 150mm Cap: Advanced Refractor Filter

The DayStar ERF 100mm with 150mm Cap is a cutting-edge filter designed for refractor telescopes. This precision-engineered filter is crafted to enhance your observing experience by reducing heat load and optimizing light transmission. The core feature of this filter is its ability to absorb or reflect harmful ultraviolet (UV) and infrared (IR) radiation while allowing light within the visible spectrum to pass through. This ensures safe and clear solar viewing, protecting your telescope's optics and filter components.

Key Product Features and Specifications

The DayStar 100mm Energy Rejection Filter (ERF) is housed in a precision cell, providing a secure and proper fit. It includes a 150mm inside diameter cap to ensure compatibility with a variety of telescopes. This filter effectively blocks UV and IR radiation, protecting your optics from potential damage. It also serves as an aperture mask, ensuring a straight angle of incidence for optimal light path. Designed for use with DayStar filter assemblies, this ERF is best paired with telescopes operating at f/30 or slower for enhanced performance. The ability to create an f/30 configuration using this ERF and a Barlow lens makes it suitable for larger apertures or enhanced resolution.

Practical Applications and Benefits

The DayStar ERF 100mm with 150mm Cap is an invaluable tool for astronomy enthusiasts and professionals alike. By blocking harmful radiation and enhancing visible light transmission, this filter provides a clearer and safer solar viewing experience. Whether you're a hobbyist or a seasoned observer, this filter is designed to meet your needs. Its research-grade construction and custom-machining ensure a precise fit for your telescope, with a typical lead time of 2–3 weeks. Accurate measurements are crucial for optimal performance, so please specify the model of your refractor telescope and the precise outside diameter of your telescope’s dew shield in your order notes. The DayStar ERF 100mm with 150mm Cap is the perfect addition to your astronomy equipment, offering both functionality and reliability.