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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 ~<0.55 Angstrom.
Technical data:
- Aperture: 50mm
- No central obstruction
- Bandwidth: <0.75 Angstrom
- Tuning: tiltable Etalon
- Housing diameter: 95mm
- Length: 73mm
- Weight: 0.7kg
- 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
