Lunt B1800 Blocking Filter


  • A Blocking Filter is a required component when using any Lunt solar filter or solar telescope products.
  • The housing contains additional filters that are needed for safety when viewing the Sun.  Do not use a Lunt Solar Systems telescope or filter without a Lunt brand blocking filter.
  • Available in three different aperture from this drop-down list.  Choose the blocking filter that best suits your applications, focuser size, and telescope focal length.
  • The 12 mm blocking filter is offered in a 1.25″ or 2″ diagonal housing, and the 6mm & 18mm are available in a 1.25″ diagonal, 2″ diagonal, or 2″ straight-through extension tube design.   The large 34 mm blocking filter is available in a 2″ straight-through housing only, and can be purchased by clicking the link.
In 2" Straight-Through Tube w/ T2 & 2" Connection (B1800s)
In 1.25" Star Diagonal with T2 Connection (B1800d1)
In 2" Star Diagonal with T2 Connection (B1800d2)
Availability: Approximatively 7 to 10 days when on order. Contact us for stock status.

Please note that due to Covid-19 and a high volume of orders, some products could be on backorder at our suppliers and may have longer delays for the delivery. Contact us for stock status.

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373 Gentilly Ouest
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