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2" Filters

Items 41 to 60 of 102 total

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  1. 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
    $99.99

  2. 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
    $89.99

  3. 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
    $34.99

  4. Explore Scientific Nebula Filter 2" H-Beta Range from 478nm to 496nm with Peak at 489nm

    Explore Scientific - Nebula Filter 2" H-Beta Range from 478nm to 496nm with Peak at 489nm

    The Explore Scientific H-beta filter uses a characteristic property of the so called emission nebulae. Those objects glow in special colors, the so called emission lines.

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    Model#: 310230
    $129.99

  5. 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
    $85.00

  6. 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
    $85.00

  7. Optolong L-Pro Filter - 2" Mounted

    Optolong - L-Pro Filter - 2" Mounted

    The L-Pro filter from Optolong is a multi-bandpass filter that functions remarkably for visual use and in addition photographic use with CCD and DSLR sensors.

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    Model#: LPRO-200
    $199.00

  8. Optolong CLS-CCD Filter - 2" Mounted

    Optolong - CLS-CCD Filter - 2" Mounted

    The Optolong CLS-CCD filter will boost contrast and increase visibility of faint outer regions on most emission nebulae, planetary nebulae, and supernova remnants from light polluted areas when photographed with a color imaging camera.

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    Model#: CLSCCD-200
    $159.00

  9. 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

  10. 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

  11. 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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    Model#: HAL12-50SQ
    $259.00

  12. Astronomik - CLS Light Pollution Filter - 2" Round Mounted

    Astronomik - CLS Light Pollution Filter - 2" Round Mounted

    The Astronomik CLS is an excellent filter for black & white and color imaging of nebulae, galaxies and star clusters with astronomical instruments of any size.

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    Model#: CLS-2
    $159.95

  13. Astronomik - CLS Light Pollution Filter - CCD 2" Mounted

    Astronomik - CLS Light Pollution Filter - CCD 2" Mounted

    The Astronomik CLS CCD is suitable under light-polluted skies for DSLR Cameras, which have been remodeled for astronomical use.

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    Model#: CLSCCD-2
    $199.95

  14. Baader Planetarium 2" Polarization Filter - Single

    Baader Planetarium - 2" Polarization Filter - Single

    The Baader 2" Polarizer can attacha a T2-15 adapter, enabling the use of 1.25" eyepiece without removing the filter while keeping the eyepiece and filter position close.

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    Model#: FPOL-2
    $83.00

  15. Baader Planetarium - UHC-S / L-Booster-Filter 2"

    Baader Planetarium - UHC-S / L-Booster-Filter 2"

    The Baader Planetarium UHC-S Nebula filter excels at delivering a high-contrast and natural view of emission nebula - without excessive dimming and loss of background star fields.

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    Model#: FUHC-2
    $147.00

  16. Baader Planetarium - U-Filter (Venus and Ultraviolet) - 2"

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

    Another unique and pioneering filter from Baader Planetarium. For the first time, amateurs can now record cloud structures on Venus. The Baader Venus Filter enables amateurs to successfully image in the deep UV, a spectral region normally inaccessible

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    (48 States)
    Model#: FUV-2
    $387.00

  17. FCB-2

    Baader Planetarium - Contrast Booster 2" Filter

    Much more than a simple minus-violet filter. Based on the popular Baader Moon&Skyglow filter, the Baader Contrast-Booster takes contrast enhancement and skyglow reduction to the maximum level possible from a filter

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    Model#: FCB-2
    $123.00

  18. Celestron Oxygen III (OIII) Narrowband Filter 2"

    Celestron - Oxygen III (OIII) Narrowband Filter - 2"

    Each filter has an ultra hard, vacuum-deposited coating carefully designed to block all of the visual spectrum ranging from 400 to 700 nm This eliminates the un-natural colored halos surrounding bright stars common with O III filters of less sophisticated coating technology.

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    Model#: CEL-93624
    $109.95

  19. Celestron - UHC/LPR Filter - 2"

    Celestron - UHC/LPR Filter - 2"

    The new ultra high contrast (UHC) LPR filter has improved contrast over the typical broadband filters. Sky background is darker, and contrast of emission nebulae are noticeably improved.

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    Model#: CEL-94124
    $99.95

  20. Lumicon - Night Sky H-Alpha Filter  2"

    Lumicon - Night Sky H-Alpha Filter 2"

    Lumicon's Night Sky Hydrogen-Alpha Filters are long-pass filters with a 50% transition from blocking to passing at about 640nm. At wavelengths longer than 650nm, transmittance is 90% or above

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    Model#: LF3090

    Regular Price: $168.00

    Special Price: $119.95

Items 41 to 60 of 102 total

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