SV139 1.25'' ND4 Neutral Density Filter for Telescope Eyepiece 25% Transmission

Description

Features:
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
Specifications:
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
Universal Science:
Waxing 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 this time
Package includes
SVBONY 1.25" ND4 Filter
Sturdy Plastic Case
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