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Items 81 to 100 of 966 total

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  1. 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

  2. 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

  3. 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

  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" 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

  6. 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

  7. 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

  8. DGM Optics - 1.25" Narrow Pass Band (NPB) Nebula Filter

    DGM Optics - 1.25" Narrow Pass Band (NPB) Nebula Filter

    The NPB is the ONE filter to have if you have just one, and now regarded as the top narrowband  (UHC type) filter in the world. Judged by renown astro-equipment author Phil Harrington as the best of nine leading competitors in the Astronomy Magazine review "Secret Weapons" (August 2005).

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    Model#: NPB 1.25
    $75.00

  9. DGM Optics - 2" Narrow Pass Band (NPB) Nebula Filter

    DGM Optics - 2" Narrow Pass Band (NPB) Nebula Filter

    The NPB is the ONE filter to have if you have just one, and now regarded as the top narrowband  (UHC type) filter in the world. Judged by renown astro-equipment author Phil Harrington as the best of nine leading competitors in the Astronomy Magazine review "Secret Weapons" (August 2005).

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    Model#: NPB 2
    $150.00

  10. Chroma Technology - U-Band 50mm Square Filter

    Chroma Technology - U-Band 50mm Square Filter

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    (48 States)
    Model#: U Band 50 Sq
    $275.00

  11. Chroma Technology - U-Band 50mm Filter

    Chroma Technology - U-Band 50mm Filter

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    (48 States)
    Model#: U Band 50
    $275.00

  12. FLI - 28mm Research Grade Filters - LRGB and UBVRI

    FLI - 28mm Research Grade Filters - LRGB and UBVRI

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    Model#: RG 28D Filters

    Starting at: $140.00

  13. FLI - Research Grade 28mm Luminance Filter

    FLI - Research Grade 28mm Luminance Filter

    • FLI Research Grade filter sets are par focal to F4.5 (individual filters are also available, contact FLI)
    • Size: 28mm
    • Shape: round
    • Thickness: 3mm +/-0.1mm
    • Bandwidth: N/A
    • Parallelism: 30 second or better
    • Surface Flatness: 1/4 wave per inch
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    Model#: RG 28D L
    $140.00

  14. Astrodon - Tru-Balance E-Series Filters

    Astrodon - Tru-Balance E-Series Filters

    Astrodon Tru-Balance RGB filters have revolutionized CCD imaging. Their popularity is due to ease-of-use, high optical throughput and great resulting color for galaxies, star clusters and nebulae.  There are two varieties of Tru-Balance filters - E-Series and I-Series.

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    Model#: E Series Tru Balance

    Starting at: $450.00

  15. TO - Full Aperture R-G Solar Film Filters

    TO - Full Aperture R-G Solar Film Filters

    The R-G Solar film by Thousand Oaks Optical now brings superior solar imaging to the amateur astronomer. The question may come up as to why? R-G Solar Film emphasizes more on the natural yellow and orange colors of the Sun which is what makes the viewing so extraordinary. Last but not least, R-G Solar Film offers high resolution even at high magnification!

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    Model#: RG Full Aperture

    Starting at: $49.00

  16. Astrodon - Photometric Sloan - 50mm Unmounted Gen2 g' Edge Blackened Square Filter

    Astrodon - Photometric Sloan - 50mm Unmounted Gen2 g' Edge Blackened Square Filter

    NEW!  Astrodon introduces Generation 2 Sloan filters based upon ongoing input from research organizations.  The changes include

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    FREE SHIPPING
    (48 States)
    Model#: g'2-50S
    $440.00

  17. IDAS - Hutech - 1.25" Jupiter and Saturn Methane Filter

    IDAS - Hutech - 1.25" Jupiter and Saturn Methane Filter

    This filter is used to image Jupiter and Saturn. The bandpass enhances contrast in the methane band.

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    (48 States)
    Model#: BPF
    $395.00

  18. IDAS - Hutech - 1.25" Venus Filter

    IDAS - Hutech - 1.25" Venus Filter

    This filter is used for imaging Venus (increases contrast for lower atmosphere cloud structures).

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    FREE SHIPPING
    (48 States)
    Model#: VW-1
    $495.00

  19. IDAS Hutech 1.25" Mars Filter

    IDAS - Hutech - 1.25" Mars Filter

    This filter is used to image Mars. It enhances the visibility of atmospheric water vapor clouds.

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    FREE SHIPPING
    (48 States)
    Model#: BE410
    $450.00

  20. IDAS Hutech 52mm UV/IR Blocking Filter

    IDAS - Hutech - 52mm UV/IR Blocking Filter

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    Model#: UIBAR-52
    $179.00

Items 81 to 100 of 966 total

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