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Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0
Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0

Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0

by Baader Planetarium
SKU BAA-2458343
CA$70.00 - CA$118.00
CA$70.00
CA$70.00 - CA$118.00
CA$70.00
Price Match Policy!
  • Four Neutral Density Options: ND 0.6, ND 0.9, ND 1.8, and ND 3.0
  • Two Standard Sizes: 1.25" and 2" round mounted cells
  • Coatings: Baader Planetarium Phantom Group multi-coatings
  • Substrate: Fine-optically polished for maximum sharpness
  • Stackable: Threaded on both sides to combine with other filters
2 in stock
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Baader Neutral Density Filter - ND 0.6/0.9/1.8/3.0

    The Baader Neutral Density Filter, available in 1.25" and 2" formats, provides four distinct optical densities from ND 0.6 to ND 3.0 for precise brightness control of bright celestial objects. These filters are fine-optically polished to maintain critical sharpness at high magnification, whether you choose the ND 0.9 for balancing lunar phases or the ND 1.8 for reducing the overwhelming glare from a full Moon.

    Phantom Group Coatings: Maximizing Contrast on 1.25" and 2" Filters

    Each Baader ND filter is treated with their proprietary Phantom Group multi-coatings. This advanced coating process virtually eliminates ghosting, reflections, and stray light, resulting in a darker background sky and improved visibility of subtle surface details on the Moon and planets. The fine-optical polish of the substrate ensures that adding the filter to your optical train does not introduce any loss of sharpness, even at high power.

    Four Densities (ND 0.6 to 3.0) for Lunar and Solar Management

    Choosing the right light reduction is critical for comfortable observing. Baader offers four densities to match your target: the lighter ND 0.6 and ND 0.9 filters are ideal for observing the Moon during its crescent or quarter phases, while the darker ND 1.8 and ND 3.0 filters are necessary to cut the intense glare of the full Moon, preventing temporary blindness and revealing subtle rilles and crater rays.

    • Critical Solar Warning: These filters are NOT primary solar filters and are unsafe for solar viewing on their own. They may only be used for solar observation as an additional filter, placed *after* a dedicated, objective-mounted solar filter (like Baader AstroSolar Film) to further reduce brightness for imaging or visual comfort.

    2-Sided Threads for Stacking on 1.25" and 2" Filters

    Baader ND filters are threaded on both sides of the cell, allowing you to stack them with other filters in your collection. You can easily combine an ND filter with a color filter to enhance planetary details—like a #21 Orange filter for Mars—while simultaneously reducing brightness. This dual-thread design makes the Baader ND filter a modular tool for managing contrast and brightness across a wide range of astronomical targets.

  • Which Baader ND filter density should I choose for the Moon?

    The best density depends on the lunar phase and your telescope's aperture. For most telescopes, the ND 0.6 or ND 0.9 are excellent starting points for crescent to quarter phases. For a full or near-full Moon, which can be uncomfortably bright, the ND 1.8 is often required to reduce glare and improve contrast on surface features.

    Can I use the Baader ND 3.0 filter for direct solar viewing?

    Absolutely not. A Baader Neutral Density filter is NOT a standalone solar filter and will not protect your eyes or equipment from harmful solar radiation. It must only be used as a secondary filter in conjunction with a safe, full-aperture solar filter (like Baader AstroSolar Film) that is placed over the front of your telescope.

    How do the Phantom Group coatings on the Baader ND filter improve my view?

    The Baader Phantom Group multi-coatings are designed to maximize light transmission at desired wavelengths while minimizing reflections. This prevents ghost images and internal scattering, which would otherwise reduce contrast. The result is a cleaner, higher-contrast image with a darker background, making it easier to see faint details on bright objects.

    Can I stack a Baader ND filter with my color filters?

    Yes. All Baader ND filters are threaded on both the top and bottom of the filter cell. This allows you to screw another filter, such as a color filter for planetary observing, directly into the Baader ND filter. This is useful for enhancing specific features while simultaneously controlling brightness.

    How would the Baader ND 0.9 filter perform on Jupiter with a 10" f/5 Dobsonian?

    A 10" telescope gathers significant light, which can sometimes make Jupiter appear overly bright, washing out subtle cloud band details. The Baader ND 0.9 filter is an excellent choice in this scenario. It will gently dim the view, reducing glare and improving your eye's ability to discern low-contrast features like festoons and ovals within Jupiter's zones and belts without making the image too dark.

    I'm imaging the lunar terminator with a C8 SCT. Will the Baader ND 0.6 filter help?

    Yes, the Baader ND 0.6 filter is very useful for imaging bright lunar regions like the terminator with a C8. It helps prevent overexposure of crater rims and bright highlands by reducing the overall light intensity. This allows you to use longer exposure times to capture detail in the adjacent shadowed areas without blowing out the highlights, resulting in a more balanced and detailed final image.

  • Filter Type Neutral Density (ND)
    Available Sizes 1.25" and 2" Round Mounted
    Available Densities ND 0.6, ND 0.9, ND 1.8, ND 3.0
    Coatings Baader Planetarium Phantom Group Multi-Coatings
    Substrate Fine-Optically Polished Glass
    Threading Threaded on both sides for stacking
    Net weight (kg) 0.01
    Single or Set? Single Filter
    Filter mounted Mounted (LPFC 6mm)
    Filter Usage Lunar, Planetary, Solar (1.25" Round Mounted / ND 0.6, 2" Round Mounted / ND 0.6, 1.25" Round Mounted / ND 0.9, 2" Round Mounted / ND 0.9, 1.25" Round Mounted / ND 1.8, 2" Round Mounted / ND 1.8)
    Solar (1.25" Round Mounted / ND 3.0, 2" Round Mounted / ND 3.0)
    Filter Thickness (without cell) 2 mm
    Transmission Range full Spectrum
    Transmission 25% (1.25" Round Mounted / ND 0.6, 2" Round Mounted / ND 0.6)
    12.5% (1.25" Round Mounted / ND 0.9, 2" Round Mounted / ND 0.9)
    1.5% (1.25" Round Mounted / ND 1.8, 2" Round Mounted / ND 1.8)
    0.1% (1.25" Round Mounted / ND 3.0, 2" Round Mounted / ND 3.0)
    Damping Factor 4x (1.25" Round Mounted / ND 0.6, 2" Round Mounted / ND 0.6)
    8x (1.25" Round Mounted / ND 0.9, 2" Round Mounted / ND 0.9)
    64x (1.25" Round Mounted / ND 1.8, 2" Round Mounted / ND 1.8)
    1000x (1.25" Round Mounted / ND 3.0, 2" Round Mounted / ND 3.0)
    AR-Coating Phantom Coating® Group, planeoptically polished
  • Baader Planetarium Warranty