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Items 61 to 80 of 899 total

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  1. IDAS - Hutech - 52mm LPS Filter

    IDAS - Hutech - 52mm LPS Filter

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    Model#: LPS-P2-52
    $189.00

  2. IDAS - Hutech - 48mm (2" eyepiece) LPS Filter

    IDAS - Hutech - 48mm (2" eyepiece) LPS Filter

    48mm (2'"' eyepiece) LPS filter

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    Model#: LPS-P2-48
    $189.00

  3. IDAS - Hutech - 28.6mm (1-0.25" eyepiece) LPS filter (formerly part #LPS-P31.7)

    IDAS - Hutech - 28.6mm (1-0.25" eyepiece) LPS filter (formerly part #LPS-P31.7)

    Light pollution suppression (LPS) filters are designed to suppress the common emission lines generated by artificial lighting, yet allow the important nebula emission lines to pass, thus enhancing the contrast of astronomical objects, particularly emission nebulae.

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    Model#: LPS-P2-28.6
    $179.00

  4. IDAS Hutech SCT Filter adapter w/48mm Nebula Filter II

    IDAS - Hutech - SCT Filter adapter w/48mm Nebula Filter II

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    FREE SHIPPING
    (48 States)
    Model#: LPS-V4-48SCT
    $275.00

  5. IDAS - Hutech - 52mm Nebular Filter II

    IDAS - Hutech - 52mm Nebular Filter II

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    Model#: LPS-V4-52
    $189.00

  6. IDAS - Hutech - 48mm Nebular Filter II

    IDAS - Hutech - 48mm Nebular Filter II

    The IDAS LPS-V4 filter is designed to provide maximum contrast between key astronomical emission lines and a light polluted sky. These filters incorporate IDAS MBT, UFP, and IGAD technologies to insure undegraded and extremely durable optical performance.

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    Model#: LPS-V4-48
    $189.00

  7. IDAS Hutech 28.6mm Nebular Filter II

    IDAS - Hutech - 28.6mm Nebular Filter II

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    Model#: LPS-V4-28.6
    $189.00

  8. IDAS Hutech 28.6mm Nebula Filter

    IDAS - Hutech - 28.6mm Nebula Filter

    "A chain is only as good as its weakest link." This well-known truth applies to many "chains", including the optical chain, which includes a telescope, eyepiece, and filter.

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    Model#: LPS-V3-28.6
    $59.00

  9. IDAS - Hutech - LRGB set (31mm unmounted) for QSI 500 series

    IDAS - Hutech - LRGB set (31mm unmounted) for QSI 500 series

    Hutech LRGB filter set for QSI 500 series cameras.

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    FREE SHIPPING
    (48 States)
    Model#: RS-31
    $575.00

  10. IDAS - Hutech - AP Filter Holder with 72mm LPS Filter

    IDAS - Hutech - AP Filter Holder with 72mm LPS Filter

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    (48 States)
    Model#: LPS-P2-72AP
    $365.00

  11. IDAS Hutech 28.6mm (for 1.25") UB/IR Blocking Filter
  12. Baader Planetarium - 1.25" LRGBC Filters UV/IR Cut L-Filter and Clear Filter

    Baader Planetarium - 1.25" LRGBC Filters - UV/IR Cut L-Filter and Clear Filter

    Baader 1.25" RGB Filter Set with UV/IR Cut L-Filter and Clear Focusing Filter (Optically Polished) - Set of 5 filters.

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    (48 States)
    Model#: FLRGBC-1
    $415.00

  13. Baader Planetarium - 1.25" LRGB Filters - UV/IR Cut L-Filter

    Baader Planetarium - 1.25" LRGB Filters - UV/IR Cut L-Filter

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    (48 States)
    Model#: FLRGB-1
    $359.00

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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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    FREE SHIPPING
    (48 States)
    Model#: BPF
    $395.00

  20. 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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    (48 States)
    Model#: VW-1
    $495.00

Items 61 to 80 of 899 total

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