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Celestron Moon Filter Set - 1.25”
Celestron Moon Filter Set - 1.25”
Celestron Moon Filter Set - 1.25”
Celestron Moon Filter Set - 1.25”
Celestron Moon Filter Set - 1.25”
Celestron Moon Filter Set - 1.25”
Celestron Moon Filter Set - 1.25”
Celestron Moon Filter Set - 1.25”
Celestron Moon Filter Set - 1.25”
Celestron Moon Filter Set - 1.25”
Celestron Moon Filter Set - 1.25”

Celestron Moon Filter Set - 1.25”

by Celestron
SKU CEL-94315
CA$83.00 - CA$83.00
CA$83.00
CA$83.00 - CA$83.00
CA$83.00
Price Match Policy!
  • Four essential 1.25” lunar filters in one kit
  • Three Neutral Density (ND) filters reduce brightness with 13%, 25%, and 50% transmission
  • Moon & Sky Glow filter enhances contrast on subtle lunar features
  • Stackable anodized aluminum cells weighing only 6 g each
  • Includes a foam-lined hard case, a printed moon map, and a downloadable eBook
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Celestron Moon Filter Set - 1.25”

    The Celestron Moon Filter Set - 1.25” provides the definitive toolkit for observing our nearest celestial neighbor. This four-filter kit manages the Moon's overwhelming glare, allowing you to select the perfect light reduction from 13%, 25%, or 50% transmission to match any lunar phase, eyepiece, or telescope aperture. Each 1.25" filter is housed in a durable aluminum cell weighing just 6 grams, and the included Moon & Sky Glow filter selectively blocks wavelengths to dramatically increase contrast on subtle rilles and maria. The entire system, including the protective hard case, weighs only 74 grams.

    Three Neutral Density Filters: 13%, 25%, and 50% Transmission for Every Lunar Phase

    This set gives you three distinct levels of neutral density filtration to perfectly match viewing conditions. The ND96-0.9 filter passes just 13% of light, ideal for taming a full moon in a large-aperture telescope. For quarter phases or smaller scopes, the ND96-0.6 (25% transmission) and ND96-0.3 (50% transmission) filters reduce glare without over-darkening the view, making faint crater details easier to hold and reducing eye fatigue during long sessions.

    • ND96-0.9 (13% T): The workhorse for the brightest conditions, such as a full moon viewed through an 8" or larger telescope at low power.
    • ND96-0.6 (25% T): An excellent mid-range choice for gibbous phases or for use with medium-power eyepieces.
    • ND96-0.3 (50% T): Perfect for observing the slender crescent moon or for use with high-magnification eyepieces on smaller refractors.

    Moon & Sky Glow Filter: Enhanced Contrast on Lunar Maria and Rilles

    While ND filters reduce brightness uniformly, the light purple Moon & Sky Glow filter works differently. It selectively reduces transmission of specific wavelengths, which significantly boosts the contrast between different lunar terrains. This filter makes the boundaries of dark maria, the subtle shading in crater floors, and delicate rilles pop with newfound clarity.

    As a secondary benefit, this filter also blocks certain wavelengths associated with common forms of urban light pollution, like low-pressure sodium streetlights. This can provide a modest contrast increase on deep-sky objects from suburban skies, adding to its utility beyond lunar observation.

    Professional Build: 1.25" Aluminum Cells and Stackable Threads

    Each filter in the Celestron Moon Filter Set is built for durability and optical integrity. The filter glass is mounted in a rigid, black-anodized aluminum cell that threads directly into any standard 1.25" eyepiece or accessory. At just 6 grams per filter, they add virtually no weight to your optical train, preserving your telescope's balance.

    For ultimate control, each filter features male and female threads, allowing you to stack them. Combining the 13% and 25% ND filters, for example, creates an even denser filter for specialized applications like attempting to view the crescent phase of Venus in daylight.

    Beyond the Filters: Included Moon Map and Lunar Landscapes eBook

    To deepen your lunar explorations, this kit includes essential learning tools. A durable, handheld Moon map comes complete with a legend highlighting 17 key features to identify, from the Sea of Tranquility to the magnificent crater Copernicus. This allows you to turn a casual glance into a guided tour.

    You also receive a free download of Robert Reeves’ eBook, Lunar Landscapes. This guide provides fascinating context on the natural history of the Moon, the formation of its craters and maria, and the stories behind its most famous landmarks, helping you understand the science behind what you see in the eyepiece.

  • Which filter in the Celestron Moon Set should I use for a full Moon in my 8" SCT?

    For a full Moon with a large-aperture telescope like an 8" SCT, start with the darkest filter, the ND96-0.9 (13% transmission). This will cut the intense glare most effectively, especially at lower magnifications, making the view comfortable and revealing subtle ray details.

    What is the difference between the ND filters and the Moon & Sky Glow filter?

    The three Neutral Density (ND) filters are like sunglasses; they dim all colors of light equally to reduce overall brightness. The Moon & Sky Glow filter is a contrast-enhancing filter; it selectively blocks certain wavelengths of light to make subtle features on the lunar surface stand out more clearly. It imparts a faint purple tint to the image.

    Can I stack the filters in the Celestron 1.25" Moon Set?

    Yes. All four filters feature standard 1.25" filter threads on both sides of their aluminum cells, so they can be stacked. For instance, you could thread the Moon & Sky Glow filter into your eyepiece and then thread one of the ND filters onto it to both increase contrast and reduce brightness simultaneously.

    Will these filters work with eyepieces from other brands?

    Yes, the filters use standard 1.25" (M28.5x0.6) threads. They will fit the vast majority of 1.25" eyepieces and filter-ready accessories from Celestron and other manufacturers.

    How do I decide between the 13%, 25%, and 50% transmission filters?

    The choice depends on three factors: the Moon's phase, your telescope's aperture, and the magnification you're using.

    • Brightest views (Full Moon, large scope, low power): Use the 13% filter.
    • Moderate views (Gibbous Moon, mid-size scope): Use the 25% filter.
    • Dimmest views (Crescent Moon, small scope, high power): Use the 50% filter or no filter at all.
    The set gives you the flexibility to experiment and find the most pleasing view for your specific setup.

    Can the Celestron Moon Filter Set be used for anything besides the Moon?

    Yes. The ND filters are excellent for reducing the glare of Venus, which helps in discerning its crescent phase. They can also be used for terrestrial daylight viewing through a telescope. The Moon & Sky Glow filter can offer a minor contrast boost on some deep-sky objects from light-polluted locations.

  • Filter Size 31.75mm (1.25")
    Filter Housing Anodized Aluminum
    Filter Threads Standard 1.25" (Stackable)
    Filter 1 Neutral Density ND96-0.9 (13% Light Transmission)
    Filter 2 Neutral Density ND96-0.6 (25% Light Transmission)
    Filter 3 Neutral Density ND96-0.3 (50% Light Transmission)
    Filter 4 Moon & Sky Glow (Light Purple)
    Individual Filter Weight 0.21 oz (6 g)
    Total Weight (Filters & Case) 2.61 oz (74 g)
    • ND96-0.9 Filter (13%)

      ND96-0.9 Neutral Density Filter (13% transmission)

      × 1

    • ND96-0.6 Filter (25%)

      ND96-0.6 Neutral Density Filter (25% transmission)

      × 1

    • ND96-0.3 Filter (50%)

      ND96-0.3 Neutral Density Filter (50% transmission)

      × 1

    • Moon & Sky Glow Filter

      Moon and Sky Glow Filter

      × 1

    • Foam-Lined Plastic Storage Case

      Foam-Lined Plastic Storage Case

      × 1

    • Printed Moon Map with Legend

      Printed Moon Map with Legend

      × 1

  • Celestron 2-Year Warranty