Lunt Solar Systems Filters 100mm Ha Etalon filter with B1800 for 2" focuser (15951)

The Lunt Solar Systems 100mm Hydrogen-alpha (Ha) Etalon filter with B1800 is a high-quality solar filter system designed for safe and detailed observation of the Sun. This filter is intended for use with telescopes that have a 2" focuser and is suitable for refractors with focal lengths up to 1620mm. The included B1800 blocking filter is essential for both visual and imaging applications, ensuring safety and optimal performance by blocking unwanted wavelengths and protecting against harmful solar radiation. The system is engineered to provide high-contrast views of solar features such as prominences and surface details, making it ideal for both amateur and advanced solar observers.

This filter system is particularly well-suited for users who want to observe or photograph the Sun in hydrogen-alpha light, capturing fine details with clarity and safety. Always use the included B1800 blocking filter with the etalon to ensure proper protection and performance when observing the Sun.

Specifications

Capacity

• Designed for telescopes with a 2" focuser connection.

Connection (to the telescope)

• 2" barrel size, compatible with standard 2" focusers.

Half-value width

• 0.7 Angstroms, allowing the filter to isolate the hydrogen-alpha wavelength for high-contrast solar viewing.

General

• Type: Solar Filter

• Type of build: Line filter (specifically, a hydrogen-alpha etalon filter with integrated blocking filter)