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  1. DGM Optics - 2" VHT Filter

    DGM Optics - 2" VHT Filter

    The VHT is "mid-band" Nebula/LPR filter that is the perfect match for smaller scopes, or binoculars that can use filters. This filter provides a good balance between the NPB and GCE with regards to contrast vs. field background and star brightness.

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    Model#: VHT 2
    $140.00

  2. DGM Optics - 1.25" VHT Filter

    DGM Optics - 1.25" VHT Filter

    The VHT is "mid-band" Nebula/LPR filter that is the perfect match for smaller scopes, or binoculars that can use filters. This filter provides a good balance between the NPB and GCE with regards to contrast vs. field background and star brightness.

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    Model#: VHT 1.25
    $70.00

  3. DGM Optics - 2" CGE Filter

    DGM Optics - 2" CGE Filter

    The GCE takes a different approach to Wideband LPR filters by employing a "Notch" design which excludes all the bad stuff, from 540 - 590 nm, while allowing the rest of the visible spectrum to transmit over 90%.

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    Model#: CGE 2
    $160.00

  4. DGM Optics - 1.25" CGE Filter

    DGM Optics - 1.25" CGE Filter

    The GCE takes a different approach to Wideband LPR filters by employing a "Notch" design which excludes all the bad stuff, from 540 - 590 nm, while allowing the rest of the visible spectrum to transmit over 90%.

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    Model#: CGE 1.25
    $80.00

  5. DGM Optics - 2" HPOIII Filter

    DGM Optics - 2" HPOIII Filter

    The DGM Optics HPOIII is your perfect compliment to the NPB when you need a more aggressive Nebula filter that really shines with larger scopes. This filter has a bandwidth of approx.

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    Model#: HPOIII 2
    $170.00

  6. DGM Optics - 1.25" HPOIII Filter

    DGM Optics - 1.25" HPOIII Filter

    The DGM Optics HPOIII is your perfect compliment to the NPB when you need a more aggressive Nebula filter that really shines with larger scopes. This filter has a bandwidth of approx.

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    Model#: HPOIII 1.25
    $85.00

  7. iOptron - Green Moon Filter

    iOptron - Green Moon Filter

    A moon filter reduces irradiation, glare, and excess image brightness in lunar observing. It also improves the contrast between lunar albedo features.

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    Model#: TFE100
    $14.00

  8. Orion 2" moon filter

    Orion - 2" Moon Filter

    Orion 2" Moon Filter 05594 allows you to look at the moon and pick up the detail on the surface by cutting the brightness.

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    Model#: 05594
    Orion Winter Accessory Extravaganza (ends Feb 16, 2016)!

    Regular Price: $30.99

    Special Price: $26.34

  9. Astronomik - OIII Filter - SCT Rear Cell

    Astronomik - OIII Filter - SCT Rear Cell

    the Astronomik OIII filter has been very specifically designed for the visual observation of gaseous and planetary nebulae. ... Learn More
    Model#: OIII-SCT
    $199.95

  10. DayStar Filters Quark Prominence Filter

    DayStar Filters - Quark Prominence Filter

    The DayStar Quark Prominence Filter works well on f/4-f/9 refractors by simply inserting the diagonal and eyepiece. Included is a custom Daystar 4.2X telecentric barlow designed for H-Alpha wavelengths and superior field flatness.

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    FREE SHIPPING
    (48 States)
    Model#: DSZ4P
    $995.00

  11. Orion 1.25" Orion Mars Observation Eyepiece Filter

    Orion - 1.25" Orion Mars Observation Eyepiece Filter

    The custom-designed Orion Mars Observation filter enhances contrast of virtually all surface features.

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    Model#: 05599
    Orion Winter Accessory Extravaganza (ends Feb 16, 2016)!

    Regular Price: $53.99

    Special Price: $45.89

  12. Orion OIII Nebula Telescope Filter 2"

    Orion - OIII Nebula Telescope Filter 2"

    You can't turn up the luminosity on nebulas, but you can crank up the contrast between them and the sky to reveal more of their wondrous detail.

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    Model#: 05582
    Orion Winter Accessory Extravaganza (ends Feb 16, 2016)!

    Regular Price: $168.99

    Special Price: $143.64

  13. 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

  14. 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

  15. Optolong OIII CCD 12nm Filter - 1.25"

    Optolong - OIII CCD 12nm Filter - 1.25"

    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-125
    $115.00

  16. 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

  17. Optolong - OIII CCD 6.5nm Filter - 1.25" Mounted

    Optolong - OIII CCD 6.5nm Filter - 1.25" 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 different transmissions, including wavelengths of light that are in charge of light contamination (both manufactured and normal).

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    Model#: OIIICCD65-125
    $159.00

  18. 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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    FREE SHIPPING
    (48 States)
    Model#: OIIICCD65-200
    $255.00

  19. Optolong SII CCD 12nm Filter - 1.25" Mounted

    Optolong - SII CCD 12nm Filter - 1.25" Mounted

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    Model#: SIICCD12-125
    $129.00

  20. Optolong H-Beta 25nm Filter 1.25" Mounted

    Optolong - H-Beta 25nm Filter - 1.25" Mounted

    This Optolong H-Beta filter has a FWHM of 25nm, making it more suitable for visual observations of the Horsehead, California, and Cocoon nebulae. The filters transmits a 25nm transfer speed of light that is focused at 486nm and accuracy blocks outside wavelengths of light that cause light pollution (both artificial and natural).

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    Model#: HBTA25-125
    $90.00

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