Lunt 60mm Ha Etalon-Filter-System with B3400 blocking filter for 2'' focuser
H-alpha Single Pass Front Mount Etalon System for telescopes with 2" focuser and up to 3060mm focal lentgh.
- LS60FHa Main Filter
- B3400 Blocking Filter (for 2" focuser) in extension-tube
- Transport case
The LS60 Hydrogen-alpha filter system with 60mm aperture (no central obstruction) integrally tuned etalon for use on any refractor and many other telescopes. Because the LS60FHa has an estimated bandwidth of <0.7 Angstrom it is capable to providing high contrast views of both surface and edge detail.
The system includes the B3400 blocking filter, which is usable for telescopes up to 3060mm focal length. The blocking filter is installed in a straight extension tube for 2" focuser. This extension tube is equipped with a reception for 2" eyepieces and a adapter for 1.25" eyepieces.
Adding an additional available Double-Stack etalon system will reduce the bandwidth to ~<0.5 Angstrom.
- Aperture: 60 mm
- No central obstruction
- Bandwidth: <0.7 Angstrom
- Tuning: tiltable Etalon
- Housing diameter: 95 mm
- Length: 85 mm
- Weight: 0.85 kg
- Front thread: M90x1 female thread
- Rear thread: M90x1 male thread
- Blocking filter: B3400 in extension tube for 2" focuser
- Maximum focal length of telescope: 3060 mm