LUNT B3400 Blocking-Filter in 2 inch extension tube

 

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!

Blocking-filter in straight extension tube, for telescopes up to 3060mm focal length. Can only be used together with a LUNT H-alpha filter, or with a LUNT H-alpha telescope!

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.

The blocking-filter can not be used without additional H-alpha filter system from Lunt Solar Systems! Blocking-filters are absolutely required for the safety and performance of H-alpha telescopes for solar observing. Lunt Solar Systems blocking-filters contain a unique filter system. We can only warranty safety or performance, if blocking-filter is paired with a H-alpha filter or H-alpha telescope of Lunt Solar Systems.
At the tab "Accessories" you will find H-Alpha telescopes and filters with which this blocking filter can be combined.
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

SCOPE OF DELIVERY

• Blocking-filter B3400 in 2 inch straight extension tube
• Adapter for 1.25 inch eyepieces

 

Technical Data

GENERAL TECHNICAL DATA
Eyepiece Barrel Diameter	50.8 mm
Extended warranty	5 years
DIMENSIONS & WEIGHTS
Net weight (without access.)	320 g