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Barrel diameter:
1.25" 2"
Thread size:
48.0mm 28.4mm

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1.25" Orion UltraBlock NarrowBand Filter
4.6 / 5.0
The Orion UltraBlock NB Eyepiece Filter is for deep-sky observers in highly light-polluted areas. This 1.25" filter blocks all forms of light pollution allowing you to see fainter deep-sky objects than you would with wideband filters or unfiltered.
$79.99

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2" Orion UltraBlock Narrowband Eyepiece Filter
4.9 / 5.0
The Orion Ultrablock Narrowband Telescope Filter is perfect for the deep-sky observers located at highly light-polluted sites. This 2" filter blocks all forms of light pollution allowing you to see fainter deep-sky objects.
$99.99

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