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Blocking-filter in straight extension tube, for telescopes up to 540mm 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 B600s is installed in a straight extension tube, for 1.25" and 2" focuser on the telescope side, and with T2 thread and 1.25" eyepiece connection on the eyepiece side. The B600s can be used at LUNT H-alpha systems, if the used telescope has up to 540mm 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.
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