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Thousand Oaks 5.25-inch Diameter Full Aperture Solar Filter (Discontinued)


$79.00


SKU: 5250
Manufacturer: Thousand Oaks Optical

This product is no longer available
Thousand Oaks #5250 full aperture solar filters fit telescopes with an outside diameter between 5.0 and 5.2 inches and allow safe observation of the sun. 

Sizing and Mounting Solar Filters

Thousand Oaks solar filters are designed to slip over the end of the telescope. They are secured in place with a felt lining inside the cell of the filter. This felt is supplied with the filter and it is up to you to apply enough of it to the filter cell to ensure a secure fit.

In order to select the proper size filter, measure the diameter of the telescope where the filter will slip over it. Next, choose the filter diameter that is either equal to that figure or the next size above it. If your telescope diameter measures 4 inches, then a four inch filter should fit. If the telescope measures 4.1 inches, then you would select the next larger or 4.25 inch filter.


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