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SVBONY SV139 1.25"ND(4/8/16/1000) Neutral Density Moon Filter for Moon Viewing For Sale

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SVBONY SV139 1.25"ND(4/8/16/1000) Neutral Density Moon Filter for Moon Viewing:
$15.99

The 1.25" Neutral Density Moon filter reduces glare so you can see more lunar detail and surface features with your telescopeMetal filter cell threads directly into the 1.25 inch barrel of your telescope eyepieceUseful for different caliber astronomical telescopes through which the light of the Moon can be extremely overwhelmingPerfectly neutral color will not alter the natural color of the Moon 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

• Perfectly neutral color will not alter the natural color of the Moon

Specifications:

• Brand: SVBONY

• Model: SV139

• Type: Neutral Density Filter Kit

• Material: Optical glass lens, Aluminum Frame

• Barrel diameter: 1.25''

• Optical density value: 0.6 0.9 1.2 3.0

• Thread: Standard M28.5*0.6mm

• Net Weight of Set: 20g

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

• Last Quarter Moon - Three weeks after new, we again can see half of the illuminated part. This is usually called last quarter. Quarter Moon - A week after the new moon, when the Moon has completed about a quarter of its turn around the Earth, we can see half of the illuminated part; that is, a quarter of the Moon. This is the first quarter phase. It's very good effect to use the ND8 filter In this two time period

• Gibbous Moon - From now on, until it becomes new again, the illuminated part of the Moon that we can see decreases, and we say it's waning. The first week after full, it is called waning gibbous. It's very good effect to use the ND16 filter at this time

• Full Moon - Two weeks after the new moon, the moon is now halfway through its revolution, and now the illuminated half coincides with the one facing the Earth, so that we can see a full disk: we have a full moon. It's very good effect to use the ND1000 filter at this time

Package Includes（ND4） 1.25" ND4 Filter Sturdy Plastic Case Package Includes（ND8） 1.25" ND8 Filter Sturdy Plastic Case Package Includes（ND16） 1.25" ND16 Filter Sturdy Plastic Case Package Includes（ND1000 ） 1.25" ND1000 FilterSturdy Plastic Case about svbony

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