Lunt Solar Systems Filters LS 50F Ha H-Alpha filter set for 3400mm focal length (12690)

This system comes equipped with the B3400 blocking filter, making it suitable for use with telescopes that have a focal length of up to 3060mm. The blocking filter is housed in a straight extension tube designed for a 2" focuser, which includes fittings for both 2" and 1.25" eyepieces. If you want to achieve even narrower bandwidth and higher contrast, you can add a Double-Stack etalon system to reduce the bandwidth to less than 0.55 Angstrom. This setup is ideal for detailed and safe solar observation.

Technical data:

• Aperture: 50mm

• No central obstruction

• Bandwidth: Less than 0.75 Angstrom

• Tuning: Tiltable Etalon

• Housing diameter: 95mm

• Length: 73mm

• Weight: 0.7 kg

• Front thread: M90x1 female

• Rear thread: M90x1 male

• Blocking filter: B3400 in extension tube for 2" focuser

• Maximum focal length of compatible telescope: 3060 mm

Specifications

Capacity

• Frame: Lens filter

General

• Type: Solar filter

• Type of build: Line filter