The Robtics ND4 Grey Filter reduces the amount of light with 75% passing only 25% to the eye or camera. This solves the blinding effect when looking at the moon through a telescope.
The filter can be screwed in the bottom of any 1.25 inch sized eyepiece, diagonal, barlow or accessory that has internal filter threading.
Specifications
The Robtics ND4 Grey Filter reduces the amount of light with 75% passing only 25% to the eye or camera. This solves the blinding effect when looking at the moon through a telescope.
The filter can be screwed in the bottom of any 1.25 inch sized eyepiece, diagonal, barlow or accessory that has internal filter threading.
Specifications
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