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Explore Scientific

Explore Scientific ND 0.9 Neutral Density Filter 1.25-Inch – 310245

Explore Scientific ND 0.9 Neutral Density Filter 1.25-Inch – 310245

$109.99
$109.99
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The Explore Scientific ND 0.9 1.25-inch Neutral Density Filter is designed to reduce overall image brightness without changing color balance or contrast. By evenly attenuating incoming light, this filter improves comfort and detail during lunar and planetary observation, particularly when observing bright targets such as the Moon, Venus, and Jupiter.

Key Features

  • ND 0.9 Light Reduction: Reduces brightness by approximately 87%, helping prevent glare and eye strain during bright object observation.

  • Neutral Density Design: Even attenuation across the visible spectrum preserves natural color and contrast.

  • Improved Viewing Comfort: Enhances visibility of subtle surface details on the Moon and planets.

  • High Transmission Optical Coatings: Precision coatings ensure consistent light reduction without introducing optical artifacts.

  • Precision Optical Glass: Optically polished glass substrates provide sharp, distortion-free images.

  • Durable Filter Cell: Precision-machined, threaded 1.25-inch metal cell fits standard eyepieces, diagonals, and filter wheels.

Specifications

  • Filter Type: Neutral Density (ND)

  • Optical Density: 0.9

  • Brightness Reduction: Approximately 87%

  • Barrel Size: 1.25-inch

  • Primary Use: Lunar and planetary observation

  • Optical Construction: Multi-coated optical glass

  • Compatibility: Fits standard 1.25-inch eyepieces, diagonals, filter wheels, and imaging accessories

  • SKU: 310245

Why It Matters
Bright celestial objects can overwhelm the eye and obscure fine detail. The Explore Scientific ND 0.9 filter reduces glare while preserving true color and contrast, making it an essential accessory for comfortable and detailed lunar and planetary viewing.

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Frequently Asked Questions

With a beginner telescope you can see a surprising amount — the craters and mountains on the Moon, the rings of Saturn, the moons of Jupiter, and star clusters like the Pleiades. As you get more comfortable, you can also spot nebulae and distant galaxies. Not sure which beginner telescope is right for you? Check out our Telescope Buying Guide.
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