Lunt Solar Systems Filters LS60FHa B1800 2" etalon filter system (33252)

The Lunt Solar Systems LS60FHa B1800 2" etalon filter system is a high-quality H-alpha solar filter designed for safe and detailed observation of the Sun. This system features a 60mm front-mounted etalon filter with a narrow bandpass of less than 0.7 Angstrom, allowing you to see fine details on the solar surface and prominences at the edge. The included B1800 blocking filter, with an 18mm aperture, is housed in a 2" diagonal and is suitable for telescopes with focal lengths up to 1800mm for visual use and up to 1200mm for imaging. The system is easy to install on refractor telescopes with a 2" focuser and is supplied with a carry case for safe storage and transport. The B1800 blocking filter is an essential safety component, as it blocks harmful wavelengths and ensures optimal performance when paired with a Lunt H-alpha filter or telescope.

This filter system is ideal for both visual solar observation and imaging, provided the telescope’s focal length matches the blocking filter’s recommendations. Always use the blocking filter for safe solar observation, as it is a critical component for both safety and image quality.

Specifications

Capacity

• Connection to telescope: 2"

• Half-value width (bandpass): 0.7 Angstrom

Equipment

• Carry case: Yes

• Other contents: B1800 blocking filter with 18mm aperture (in 2" diagonal)

General

• Weight: 850 g

• Type: Solar filter

• Type of build: Line filter