Neutral Density Filter 2" ND 0.9
$54.99
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Neutral Density Filter 2" ND 0.9
$54.99
Light Reduction
Transmits thirteen percent visual light
2-Inch Thread
Fits standard two inch eyepieces
Glare Reduction
Reduces intense lunar glare effectively
In Stock
Crystal Clear Lunar ViewsEnhance moon details without blinding glare
The Neutral Density Filter 2" ND 0.9 delivers exceptional glare reduction for comfortable lunar viewing through medium and large aperture telescopes. By transmitting a precise 13% of incoming visual light uniformly across the spectrum, this essential telescope filter reveals subtle crater textures and surface details without altering natural color balance. Ideal for instruments 4 inches and larger, it transforms bright nighttime observations into high-contrast experiences.
Precision Optics for StargazersUnmatched optical clarity for bright celestial targets
Designed for astronomy enthusiasts, the Neutral Density Filter 2" ND 0.9 significantly improves visual contrast when examining intense celestial objects. Operating at an optical density of 0.9, this high-performance moon filter dims bright lunar reflections to eliminate eye fatigue and reduce irradiation. Beyond lunar observing, it excels at resolving challenging binary star systems where a companion star's brightness would otherwise overwhelm its fainter partner. Threaded directly for 2-inch telescope eyepieces, it maintains true color fidelity while maximizing optical definition across the full visual spectrum.
Filter SpecificationsDetailed optical and fit parameters
Filter Type
Neutral Density ND96
Optical Density
0.9 ND
Light Transmission
13% Visual Light
Filter Size
2-Inch / 50.8mm
Recommended Aperture
4 Inches (10.2cm) and larger (scope)
Primary Application
Lunar & Binary Star Observation
Spectrum Balance
Uniform Across Visual Spectrum (spectrum)
Placement
Threaded 2-Inch Eyepieces and Accessories
Key Optical FeaturesEngineered for maximum detail and sharpness
Uniform TransmissionPass 13% of total visual light
Optical Density 0.9Effectively suppresses harsh moonlight glare
Natural Color BalanceMaintains spectrum integrity without color casting
Standard ThreadingAttaches to standard 2-inch eyepiece barrels
Double Star SeparationHelps split bright unequal binary pairs
Enhanced ContrastHighlights subtle lunar surface features
Frequently Asked QuestionsEverything you need to know
What is the primary function of the Neutral Density Filter 2" ND 0.9?
The Neutral Density Filter 2" ND 0.9 reduces excessive brightness and glare when observing bright objects like the Moon, allowing for greater detail and reduced eye fatigue without altering true colors.
What telescope size works best with the Neutral Density Filter 2" ND 0.9?
This 2-inch filter is recommended for telescopes with apertures of 4 inches (10.2 cm) or larger, where light gathering power makes bright objects overwhelming to view directly.
Can the Neutral Density Filter 2" ND 0.9 be used for double star observations?
Yes, the Neutral Density Filter 2" ND 0.9 helps split double star systems where one partner significantly outshines the other by dimming glare from the primary star.
Does the Neutral Density Filter 2" ND 0.9 change the color of the Moon?
No, neutral density filters dim light uniformly across the entire visible spectrum, keeping the natural color balance intact.