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SVBONY SV139 1.25" ND4 Neutral Density Filter for Telescope Eyepiece Reduce Moon Surfaces Overall Brightness
- The 1.25" Neutral Density Moon filter reduces glare so you can see more lunar detail and surface features with your telescope
- Metal filter cell threads directly into the 1.25 inch barrel of your telescope eyepiece
- Useful for different caliber astronomical telescopes through which the light of the Moon can be extremely overwhelming
- ND4 filter transmits only 25% of the incoming light, boosting contrast and ability to discern detail on the Moon
- Perfectly neutral color will not alter the natural color of the Moon
- Brand: SVBONY
- Model: SV139
- Type: Neutral Density Filter
- Material: Aluminum Frame, Metal Thread and Optical Glass
- Barrel diameter: 1.25''
- Optical density value: 0.6
- Transmission: 25%
- Thread: Standard M28.5*0.6mm
- Net Weight: 5.0g / 0.19oz
- Note: Eyepiece are NOT included
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 effectto use the ND4 filter at
- SVBONY 1.25" ND4 Filter
- Sturdy Plastic Case
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On Feb-10-20 at 22:11:09 PST, seller added the following information:
Filed under: Eyepieces & Accessories