![LUNT B3400 Blocking-Filter in 2 inch extension tube LUNT B3400 Blocking-Filter in 2 inch extension tube](https://www.optical-systems.co.uk/media/d2/0a/34/1644306523/0553013_M_1.jpg)
![LUNT B3400 Blocking-Filter in 2 inch extension tube LUNT B3400 Blocking-Filter in 2 inch extension tube](https://www.optical-systems.co.uk/media/d2/0a/34/1644306523/0553013_M_1.jpg)
For free combination with a Lunt-Solar-Systems H-alpha solar-telescope or -filter
- Blocking-filter in straight extension tube
- For combination with H-alpha telescopes or filters
- For telescopes up to 3060mm focal length and 2 inch focuser
- Eyepiece side with 1.25 and 2 inch eyepiece connection
- Cannot be used stand-alone, only with H-Alpha systems!
Lunt Solar Systems offers blocking-filters in different sizes, and alternatively in 90° star-diagonal housings or straight extension tubes. You can choose what blocking-filter you will use at your LUNT H-alpha Etalon system.
The B3400 is installed in a straight extension tube, for 2 inch (50.8mm) focuser on the telescope side, and with 2 inch eyepiece connection and 1.25 inch (31.7mm) adapter on the eyepiece side. The B3400 can be used at LUNT H-alpha systems, if the used telescope has up to 3060mm focal length.
FEATURES
- Blocking-filter only usable at additional H-alpha filter system
- Filter diameter: 34mm
- Usable at telescopes up to 3060mm focal
- In straight extension tube
- For 2 inch focuser
- Connection for 2 inch eyepieces
- Adapter for 1.25 inch eyepieces
- Blocking-filter B3400 in 2 inch straight extension tube
- Adapter for 1.25 inch eyepieces
Colour: | black |
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Material: | Aluminium |
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