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orion ultrablock narrowband filter 2” For Sale


orion ultrablock narrowband filter 2”
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orion ultrablock narrowband filter 2”:
$119.00

Orion 2” ultrablock narrowband light pollution eyepiece filter. New, in box, with manuals.


The Orion 2-Inch UltraBlock Narrowband Eyepiece Filter 5657 is a metal filter that blocks light pollution and enhances the presence of fainter deep-sky objects. It is compatible with threaded Orion 2-inch eyepieces and is ideal for deep-sky observers at highly light-polluted sites. The filter has a narrowband spectrum cut off and 99.9% transmission of hydrogen beta and oxygen III spectrum emission.


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