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2" Filters

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  1. Astro Optic 2" UHC Filter

    AstroOptic - 2" UHC Filter

    The UHC, otherwise known as the Ultra High Contrast Filter is designed for viewing nebulae under a dark sky by filtering out certain wavelengths

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    Model#: Q1-UHC2-01

    In Stock

    Regular Price: $116.99

    Special Price: $89.99

  2. Explore Scientific Nebula Filter 2" UHC Range from 458nm to 508nm with Peak at 488nm

    Explore Scientific - Nebula Filter 2" UHC Range from 458nm to 508nm with Peak at 488nm

    UHC - This is an ultra-high contrast narrow-band filter, designed for observing the broad range of nebulae with 2.0-inch standard eyepieces or filter wheels.

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    Model#: 310210

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    $89.00

  3. Explore Scientific Nebula Filter 2" O-III Range from 483nm to 511nm with Peak at 496nm

    Explore Scientific - Nebula Filter 2" O-III Range from 483nm to 511nm with Peak at 496nm

    Oxygen III - This is the highest contrast Nebula Filter in the series, a line filter for only the two emission lines of oxygen.

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    Model#: 310200

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    $99.99

  4. Explore Scientific Nebula Filter 2" CLS Range from 436nm to 536nm with Peak at 488nm

    Explore Scientific - Nebula Filter 2" CLS Range from 436nm to 536nm with Peak at 488nm

    A general-purpose light-pollution reduction filter designed for observing the broad range of deep sky objects including nebulae and galaxies.

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    Model#: 310220

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    $89.99

  5. Explore Scientific Neutral Density Filter 2" ND 0.9

    Explore Scientific - Neutral Density Filter 2" ND 0.9

    The Explore Scientific neutral density filter transmits light uniformly across the entire visual spectrum.

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    Model#: 310240

    Available - Ships in 2-4 Days

    $34.99

  6. Optolong UHC Filter - 2" Mounted

    Optolong - UHC Filter - 2" Mounted

    This UHC, or Ultra High Contrast, filter from Optolong gives more contrast than the CLS filter, but works similarly. By decreasing the contrast-killing effects of light pollution brought on by both artificial and natural sources, the background sky becomes darker, increasing the visibility of your favorite deep-sky objects.

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    Model#: UHC-200

    Available - Ships in 2-4 Days

    $85.00

  7. Optolong - CLS Filter - 2" Mounted

    Optolong - CLS Filter - 2" Mounted

    The Optolong CLS channel is ideal for both visual and photographic applications in light polluted locations. The City Light Suppression Filter's pass-band is more extensive than the famous UHC, or Ultra High Contrast channel, numerous astronomer experts favor its utilization when observing in mild to moderate light pollution.

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    Model#: CLS-200

    Available - Ships in 2-4 Days

    $85.00

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

    Baader Planetarium - 2" Multicoated Neutral Density Filter - ND 3.0

    The Baader Planetarium Neutral Density Filter 3.0 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#: FND3-2

    Available - Ships in 2-4 Days

    $68.00

  9. 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

    Available - Ships in 2-4 Days

    $68.00

  10. Astro Optic 2" O-III Filter

    AstroOptic - 2" O-III Filter

    Oxygen III or OIII filters are mainly designed for viewing planetary nebulae that normally have extremely narrow pass bands in the oxygen spectral lines

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    Model#: Q1-OIII2-01

    In Stock

    Regular Price: $115.99

    Special Price: $89.99

  11. AstroOptic - 2" CLS Filter

    AstroOptic - 2" CLS Filter

    Light pollution CLS Filters are designed to minimize the affects of light pollution by removing common nanometers and wavelengths found in artificial street lights in the city.

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    Model#: Q1-CLS2-01

    In Stock

    Regular Price: $116.99

    Special Price: $89.95

  12. Lunt Solar Systems 2" Polarizing Filter for White Light Solar Wedge

    Lunt - 2" Polarizing Filter for White Light Solar Wedge

    2" Polarizing Filter (1 unit), to be used with the LUNT 2" White Light Solar-Wedge / Herschel-Wedge.

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    Model#: PF-1

    Available - Ships in 2-4 Days

    $74.50

  13. 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

    Available - Ships in 2-4 Days

    $64.00

  14. 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

    Available - Ships in 2-4 Days

    $64.00

  15. 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

    Available - Ships in 2-4 Days

    $58.00

  16. 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

    Available - Ships in 2-4 Days

    $87.00

  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

    Available - Ships in 2-4 Days

    $48.00

  18. Optolong Moon SkyGlow Filter - 2" Mounted

    Optolong - Moon SkyGlow Filter - 2" Mounted

    The Optolong Moon and Skyglow Filter is ideal for both visual and photographic usage. You'll see a darker background sky because of the obstruction of natural skyglow at 589nm wavelength and in emission from lights that cause artificial light pollution.

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    Model#: MSG-200

    Available - Ships in 2-4 Days

    $70.00

  19. Optolong UV-IR Cut Filter 2" Mounted

    Optolong - UV-IR Cut Filter - 2" Mounted

    Improve image sharpness with the addition of an Optolong UV-IR Cut Filter, which blocks Ultraviolet and Infrared transmissions yet lets the visible spectral lines shine through. The IR (700nm to 1100nm) and UV (300nm - 400nm) part of the spectrum are not detectable to human eyes, however not to most CCD and other computerized cameras, which are sensitive to 300nm to 1100nm.

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    Model#: UVIR-200

    Available - Ships in 2-4 Days

    $65.00

  20. Optolong Clear Focusing Filter - 2" Mounted

    Optolong - Clear Focusing Filter - 2" Mounted

    With a 98.5% transmission of the visible spectrum region of 420-680nm, the Optolong Clear Focusing Filter can be utilized to effortlessly focus your photographic goal before imaging.

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    Model#: CFF-200

    Available - Ships in 2-4 Days

    $31.00

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