Description

SVBONY SV139 1.25 ND Filter For Moon Viewing 

• 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

• 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

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

  • 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

  • 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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    Technical Specifications

    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​

    In the Box 

    SV139 1.25 ND 0.6 Filter For Moon Viewing 

    SV139 1.25 ND 0.9 Filter For Moon Viewing

    SV139 1.25 ND 1.2 Filter For Moon Viewing

    SV139 1.25 ND 3.0 Filter For Moon Viewing

    Manuals & Warranty

    Svbony 1-Year Warranty 

    Size	ND 0.6, ND 0.9, ND 1.2, ND 3.0