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  1. 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

  2. Orion 1.25" Luminance/IR Cutoff Astrophotography Filter

    Orion - 1.25" Luminance/IR Cutoff Astrophotography Filter

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    Model#: 05564
    Orion Winter Accessory Extravaganza (ends Feb 16, 2016)!

    Regular Price: $53.99

    Special Price: $45.89

  3. Orion 1.25" Sulfur-II Extra-Narrowband Filter

    Orion - 1.25" Sulfur-II Extra-Narrowband Filter

    Now you can capture dramatic Hubble-like CCD images of emission nebulas from the heart of the city or under a full Moon.

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    Model#: 05579
    $168.29

  4. 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

  5. Orion 1.25" Hydrogen-Beta Eyepiece Filter

    Orion - 1.25" Hydrogen-Beta Eyepiece Filter

    A Hydrogen-Beta telescope filter may be the only way to see the faint and elusive Horsehead, California, and Cocoon Nebulas.

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    Model#: 05583
    Orion Winter Accessory Extravaganza (ends Feb 16, 2016)!

    Regular Price: $116.99

    Special Price: $99.44

  6. Orion 2" Hydrogen-Beta Nebula Eyepiece Filter

    Orion - 2" Hydrogen-Beta Nebula Eyepiece Filter

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    Model#: 05584
    Orion Winter Accessory Extravaganza (ends Feb 16, 2016)!

    Regular Price: $136.99

    Special Price: $116.44

  7. Orion 1.25" H-Alpha Extra-Narrowband Filter

    Orion - 1.25" H-Alpha Extra-Narrowband Filter

    Get Great Nebula Images Under City Lights or a Full Moon with the Orion Hydrogen-Alpha Extra Narrowband Astrophotography Filter!

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    Model#: 05587
    Orion Winter Accessory Extravaganza (ends Feb 16, 2016)!

    Regular Price: $189.99

    Special Price: $161.49

  8. Orion 1.25" Mars Observation Eyepiece Filter Set

    Orion - 1.25" Mars Observation Eyepiece Filter Set

    You may not see little green guys with antennae, but you will resolve plenty of subtle features with this Orion Mars-optimized telescope filter set. It consists of three 1.25" glass filters in threaded aluminum cells:

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    Model#: 05591
    $84.65

  9. Orion Deluxe Stargazer's 1.25" Eyepiece Filter Set

    Orion - Deluxe Stargazer's 1.25" Eyepiece Filter Set

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    Model#: 05590
    Orion Winter Accessory Extravaganza (ends Feb 16, 2016)!

    Regular Price: $152.99

    Special Price: $130.04

  10. Orion 1.25" 25% Transmission Moon Filter

    Orion - 1.25" 25% Transmission Moon Filter

    Useful telescope eyepiece filter transmits 25% of incoming light. Ideal for viewing crescent Moon phases and for lunar viewing in smaller-aperture telescopes, for which less dimming is required.

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    Model#: 05598
    Orion Winter Accessory Extravaganza (ends Feb 16, 2016)!

    Regular Price: $20.99

    Special Price: $17.84

  11. Orion 1.25" Dark Frame Imaging Filter

    Orion - 1.25" Dark Frame Imaging Filter

    The Orion 1.25" Dark Frame Imaging Filter eliminates camera noise and hot pixels by blocking light from the imaging sensor to obtain dark frames.

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    Model#: 05451
    $29.99

  12. Orion Moon Filter 13% Transmission 1.25"

    Orion - Moon Filter 13% Transmission 1.25"

    The Moon's disk, even at partial phases, is intensely bright with reflected sunlight. The glare washes out most of the craters, rilles, and other surface details from view

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    Model#: 05662
    $19.99

  13. Orion OIII Nebula Telescope Filter 1.25"

    Orion - OIII Nebula Telescope Filter 1.25"

    1.25in ... Learn More
    Model#: 05581
    Orion Winter Accessory Extravaganza (ends Feb 16, 2016)!

    Regular Price: $116.99

    Special Price: $99.44

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