Cloud Break Optics

2" Neutral Density Moon Filter (BPND18)

2" Neutral Density Moon Filter (BPND18) - Main image
2" Neutral Density Moon Filter (BPND18) - View 22" Neutral Density Moon Filter (BPND18) - View 3
$57.67 $79 In stock

Category: Filters

Description

This 2" filter is threaded for 48 mm metric threads. It has a transmission rate of 1.8%, making it an ideal moon filter for large aperture instruments. Use this filter with the AstroSolar Density 3.8 Film for safe solar observation.

IMPORTANT! Do not attempt to use this filter without a white-light filter in front of your main telescope optics. While it will supplement the ND 3.8 Photographic Density filter material to yield a safe combined transmission level, it is wholly insufficient by itself for solar viewing. Serious damage to your eyes could result from improper use of solar filters!

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Evelyn ★★★★★

Finally a moon filter that doesn't wash out the disk entirely — the 1.8% transmission keeps craters sharp and contrasty. Threaded perfectly into my 2" focuser without any wobble.

Sofia ★★★★★

The 1.8% transmission rate cuts the moon's glare down to a comfortable level even through my 12-inch scope, and the 48mm threads were machined clean enough to seat smoothly. Was a bit worried about sharpness loss, but the view stayed crisp from edge to edge.

Zoe L. ★★★★★

The 48mm threading fit perfectly on my telescope without any adapter issues, and the moon's glare is now completely tamed. Crisp, clear views of the lunar surface without washing out the details.

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