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2" Filters

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  1. Baader Planetarium 2" Multicoated Neutral Density Filter ND 0.6

    Baader Planetarium - 2" Multicoated Neutral Density Filter - ND 0.6

    The Baader Planetarium Neutral Density Filter 0.6. helps reduce light from bright objects. It is mounted in a 2" filter cell (also available as a 1.25" version SOLD SEPARATELY)

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    Model#: FND0-2
    $64.00

  2. Baader Planetarium 2" Multicoated Neutral Density Filter - ND 0.9

    Baader Planetarium - 2" Multicoated Neutral Density Filter - ND 0.9

    The Baader Planetarium Neutral Density Filter 0.9 helps reduce light from bright objects. It is mounted in a 2" filter cell (also available as a 1.25" version SOLD SEPARATELY)

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    Model#: FND1-2
    $64.00

  3. Baader Planetarium 2" Multicoated Neutral Density Filter - ND 1.8

    Baader Planetarium - 2" Multicoated Neutral Density Filter - ND 1.8

    The Baader Planetarium Neutral Density Filter 1.8 helps reduce light from bright objects. It is mounted in a 2" filter cell (also available as a 1.25" version SOLD SEPARATELY)

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    Model#: FND2-2
    $68.00

  4. Optolong OIII CCD 12nm Filter - 2" Mounted

    Optolong - OIII CCD 12nm Filter - 2" Mounted

    The Optolong Oxygen III 12nm Narrowband Filter transmits a bandwidth of 12nm of light that is focused at 500nm and definitely decreases different transmissions, including wavelengths of light that cause light pollution (both artificial and natural).

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    Model#: OIIICCD12NM-200
    $179.00

  5. Optolong OIII CCD 6.5nm Filter - 2" Mounted

    Optolong - OIII CCD 6.5nm Filter - 2" Mounted

    The Optolong Oxygen III 6.5nm Extra Narrowband Filter transmits a 6.5nm bandwidth of light that is focused at 500nm and radically decreases other transmissions, including wavelengths of light that cause light pollution (both artificial and natural).

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    (48 States)
    Model#: OIIICCD65-200
    $255.00

  6. Optolong Venus U Filter - 2" Mounted

    Optolong - Venus U Filter - 2" Mounted

    Picture the sulphuric acid clouds of Venus or do UV landscape photography with the Optolong 2" Venus U Filter. This special filter must be utilized for imaging through CCD/CMOS or DSLR cameras* only since our eyes are not sensitive to UV wavelengths.

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    (48 States)
    Model#: VEU-200
    $253.30

  7. Optolong - H-Alpha 12nm CCD Filter - 50mm Square Unmounted

    Optolong - H-Alpha 12nm CCD Filter - 50mm Square Unmounted

    The Optolong H-Alpha 12nm Narrowband Filter works by permitting a 12nm light bandwidth, focused on the 656nm wavelength through, and hindering the transmission of contrast-killing light pollution wavelengths.

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    (48 States)
    Model#: HAL12-50SQ
    $259.00

  8. Baader Planetarium Visual Narrowband O-III Filter - 1.25"

    Baader Planetarium - Visual Narrowband O-III Filter - 2"

    For enthusiastic deep sky observers who live in light-polluted areas, planetary nebulae and supernovae remnants will shine with the enhance contrast from the Baader Planetarium O-III Filter!

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    Model#: BPO32
    $118.00

    Out of stock

  9. Baader Planetarium Color Filters - 1.25"

    Baader Planetarium - Color Filters - 2"

    These color filters provide the highest levels of image brightness and freedom from scattered light, combined with uncompromising image sharpness at the high magnifications required to observe delicate planetary details.

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    (48 States)
    Model#: BPCF2
    $284.00

    Out of stock

  10. Baader Planetarium - Contrast-Booster Filter - 2"

    Baader Planetarium - Contrast-Booster Filter - 2"

    The Baader Planetarium 2" Contrast Booster Filter is a remarkable accessory for all refractive optical systems!

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    Model#: BPCB2
    $115.00

  11. Baader Planetarium - Neodymium (Moonglow and Skyglow) Filter - 2"

    Baader Planetarium - Neodymium (Moonglow and Skyglow) Filter - 2"

    The Baader Planetarium Neodymium Filter was intended to transmit the most amount of incoming light possible while suppressing skyglow caused by artificial lighting and background glow when Moon is above horizon.

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    Model#: BPMS2
    $119.00

  12. Baader Planetarium - 	Neutral Density 1.8 Filter - 2"

    Baader Planetarium - Neutral Density 1.8 Filter - 2"

    The Baader Planetarium Neutral Density 2" 1.8 Filter is threaded for 48mm metric threads and has a 1.6% transmission rate, making it remarkable for observing the moon with large aperture optical tubes. NOTE: Use the filter with the AstroSolar Density 3.8 Film for safe solar observing.

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    Model#: BPND18
    $58.00

  13. Baader Planetarium Polarizing Filter - 2"

    Baader Planetarium - Polarizing Filter - 2"

    For observers who enjoy lunar viewing, the Baader Planetarium Polarizing Filter is a perfect option. It provides variable neutral density as it is rotated to accommodate different lunar stages.

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    Model#: BPPOL2
    $87.00

  14. Baader Planetarium - Solar Continuum Filter - 2"

    Baader Planetarium - Solar Continuum Filter - 2"

    Baader solar continuum filters offer unsurpassed contrast of photospheric details which is achieved by an extremely narrow half bandwidth of only 8nm. Functions like a monochrometer, suppressing the effects of solar atmospheric turbulence to provide images that appear markedly more stable. IMPORTANT: MUST be used with a visual density white-light solar filter in front of lens otherwise damage to eyes can result.

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    Model#: BPSC2
    $136.00

  15. Baader Planetarium - U-Filter (Venus-Filter) - 2"

    Baader Planetarium - U-Filter (Venus-Filter) - 2"

    The Baader Venus filter blocks the entire spectral region from 200nm to 1500nm except for a very narrow bandwidth from 300nm to 400nm in the far violet. Transmission efficiency reaches 80% at the peak. This filter makes it possible to image cloud detail on the surface of Venus.

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    (48 States)
    Model#: BPU2
    $355.00

  16. Optolong H-Alpha 7nm CCD Filter - 2" Mounted

    Optolong - H-Alpha 7nm CCD Filter - 2" Mounted

    The Optolong H-Alpha 7nm is an very narrow emission-line filter that works by permitting a 7nm bandwidth of light, fixated on the 656nm wavelength through, and blocking the transmission of contrast killing wavelengths of light pollution.

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    (48 States)
    Model#: HAL7-200
    $259.00

  17. Optolong Variable Polarizer Filter - 2" Mounted

    Optolong - Variable Polarizer Filter - 2" Mounted

    Adjust the brightness level of the Moon, Venus, and other bright objects with the Optolong Variable Polarizer. A standard Moon Filter is like a pair of shades. They work fine, however in some cases the scene is excessively dull or too bright, and very little can be done about it.

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    Model#: VPO-200
    $48.00

  18. Optolong SII CCD 12nm Filter - 2" Mounted

    Optolong - SII CCD 12nm Filter - 2" Mounted

    The Optolong Sulfur II 12nm Narrowband Filter works by allowing a 12nm bandwidth of light, centered on the 672nm wavelength through, and blocking contrast-killing light pollution wavelengths from coming through.

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    (48 States)
    Model#: SIICCD12-200
    $209.00

  19. Optolong SII CCD 6.5nm Filter - 2" Mounted

    Optolong - SII CCD 6.5nm Filter - 2" Mounted

    The Optolong Sulfur II 6.5nm Extra Narrowband Filter transmits a 6.5nm bandwidth of light that is centered at 672nm and radically decreases other transmissions, including wavelengths of light that are responsible for light pollution (both artificial and natural).

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    (48 States)
    Model#: SIICCD65-200
    $250.00

  20. Optolong H-Alpha 12nm CCD Filter - 2" Mounted

    Optolong - H-Alpha 12nm CCD Filter - 2" Mounted

    The Optolong H-Alpha 12nm Narrowband Filter works by permitting a 12nm bandwidth of light, fixated on the 656nm wavelength through, and blocking the transmission of contrast-killing light pollution wavelengths.

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    Model#: HAL12-200
    $199.00

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