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SV139 1.25'' ND Filter For Moon Viewing

SKU: W9108A
Regular price US$ 9.99

  • Help you watch the moon comfortably; The 1.25" Neutral Density Moon filter can reduce the amount of light reaching the film without affecting the color; and reduces glare so you can see more lunar detail and surface features with your telescope
  • Durable Material; The included filters are made of HD optical glass; Good level of transmittance; Aluminum alloy frame sealing ring for better tightness; avoiding fall or loose
  • Protect vision; ND4 filter transmits only 25% of the incoming light; help reduce radiation; reduce deformation between light and dark areas at the edge of the moon; help protect dark-adapted vision when viewing the moon's surface
  • Suitable for watching the crescent moon; As the Moon moves around the Earth; we get to see more and more of the illuminated half; and we say the Moon is waxing; At first we get a sliver of it; which grows as days go by; This phase is called the crescent moon; It's very good effect to use the ND0.6 filter at this time
  • Applicable standard 1.25 inch; Metal filter cell threads directly into the 1.25 inch barrel of your telescope eyepiece; Let you achieve a sharper image directly; Useful for different caliber astronomical telescopes through which the light of the Moon can be extremely overwhelming

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Model W9108A W9108B W9108C W9108D
Size ND0.6 ND0.9 ND01.2 ND3
Type  Neutral Density Filter
Material Aluminum Frame, Metal Thread and Optical Glass
Barrel diameter 1.25'' 1.25'' 1.25'' 1.25''
Optical density value 0.6 0.9 1.2 3.0
Transmission  25% 12.5% 6.25% 0.1%
Thread Standard M28.5*0.6 Standard M28.5*0.6 Standard M28.5*0.6 Standard M28.5*0.6
Suitable moon phase Waxing crescent moon first quarter moon last quarter moon Waning gibbous moonWaxing gibbous moon Full moon
Thickness​ 2mm 2mm​ 2mm​ 2mm​

1. The 1.25'' Neutral Density Moon filter reduces glare, so you can see more lunar details and surface features with your telescope. The metal filter cell threads directly into the 1.25'' barrel of your telescope eyepiece

2. Perfectly neutral color will not alter the natural color of the moon

3. ND0.6 transmits 25% of the incoming light, ND0.9 transmits 12.5% of the incoming light,ND1.2 transmits 6.25% of the incoming light, ND3 transmits only 0.1% of the incoming light

4. We have four different sizes for you to choose from. Different sizes suitable for different moon phases. ND0.6 filter suitable for waxing crescent moon; ND0.9 filter suitable for first quarter moon and last quarter moon; ND0.9 filter suitable for Waning gibbous moon and waxing gibbous moon; ND3 filter suitable for full moon observation

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