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  1. Lunt Solar Systems 100mm H-Alpha Filter - w/ B1800 for 1.5" Focusers

    Lunt Solar Systems 100mm H-Alpha Filter - w/ B1800 for 1.5" Focusers

    The new Lunt Solar Systems LS100 Hydrogen-Alpha Filter incorporates a unique design feature ... Learn More
    Model#: LS100FHa1_B1800
    $5,744.00

  2. APM - Herschelwedge / Solarprism 1.25 "

    APM - Herschelwedge / Solarprism 1.25 "

    Herschelwedges/Solarprisms designed by APM Telescopes for high resolution photo-visuel work with refractors and shiefspieglers.Warning: Never use the Herschelwedge in Catadioptric Telescopes like Schmidt Cassegrain or Maksutov Cassegrain ... Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: 10013
    $220.00

  3. Astrodon - 50 mm square Unmounted ExoPlanet-BB

    Astrodon - 50 mm square Unmounted ExoPlanet-BB

    Astrodon introduces the ExoPlanet-BB filter for use in amateur-scale telescopes to measure light curves of exoplanets ... Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: XOPBB-50S
    $350.00

  4. Astrodon - 1.25" ExoPlanet-BB Filter

    Astrodon - 1.25" ExoPlanet-BB Filter

    Astrodon introduces the ExoPlanet-BB filter for use in amateur-scale telescopes to measure light curves of exoplanets ... Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: XOPBB-27R
    $175.00

  5. Astrodon - 1.25" Mounted CLEAR Filter

    Astrodon - 1.25" Mounted CLEAR Filter

    TRU-BALANCE FILTERSSIMPLIFY YOUR IMAGINGGreat Filters Just Got Better - Generation 2 Now Shipping! Clear optical windows. Pass all frequency of light to the detector.IF your optical system is well color corrected ... Learn More
    Model#: C2-27
    $90.00

  6. Astrodon - 1.25" Mounted CLEAR Filter

    Astrodon - 1.25" Mounted CLEAR Filter

    TRU-BALANCE FILTERSSIMPLIFY YOUR IMAGINGGreat Filters Just Got Better - Generation 2 Now Shipping! Clear optical windows. Pass all frequency of light to the detector.IF your optical system is well color corrected ... Learn More
    Model#: C2-27R
    $90.00

  7. Astrodon - 1.25" Narrowband filter 5 nm FWHM

    Astrodon - 1.25" Narrowband filter 5 nm FWHM

    Narrowband (NB) filters  enhance contrast of emission objects by accepting only a narrow range of wavelengths around the emission lines of hydrogen (H-a, 656 nm), oxygen (OIII, 501 nm), sulfur (SII, 672nm) and others.

    ...     Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: FL1-AD-xx5
    $275.00

  8. Astrodon - 31mm LRGB E-Series Filters

    Astrodon - 31mm LRGB E-Series Filters

    Astrodon is also providing its latest Generation 2 E-Series 1.25" filters mounted in 31 mm inserts specifically for the popular QSI CCD cameras, such as the QSI532 and QSI583.  

    ...     Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: FL3-AD-LRGBE
    $450.00

  9. FL3-AD-LRGBI

    Astrodon - 31mm LRGB I-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.

    ...     Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: FL3-AD-LRGBI
    $450.00

  10. Astrodon - 50 mm dia. Unmounted ExoPlanet-BB

    Astrodon - 50 mm dia. Unmounted ExoPlanet-BB

    Astrodon introduces the ExoPlanet-BB filter for use in amateur-scale telescopes to measure light curves of exoplanets ... Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: XOPBB-50R
    $275.00

  11. Astrodon - 50mm dia. CLEAR Filter

    Astrodon - 50mm dia. CLEAR Filter

    TRU-BALANCE FILTERSSIMPLIFY YOUR IMAGINGGreat Filters Just Got Better - Generation 2 Now Shipping!Clear optical windows. Pass all frequency of light to the detector. IF your optical system is well color corrected ... Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: C2-50R
    $180.00

  12. Astrodon - 50mm Square CLEAR Filter

    Astrodon - 50mm Square CLEAR Filter

     TRU-BALANCE FILTERSSIMPLIFY YOUR IMAGINGGreat Filters Just Got Better - Generation 2 Now Shipping! Clear optical windows. Pass all frequency of light to the detector.IF your optical system is well color corrected ... Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: C2-50S
    $275.00

  13. Astrodon - ExoPlanet-BB in 31 mm inserts for QSI

    Astrodon - ExoPlanet-BB in 31 mm inserts for QSI

    Astrodon introduces the ExoPlanet-BB filter for use in amateur-scale telescopes to measure light curves of exoplanets ... Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: XOPBB-31R
    $175.00

  14. Astrodon - LRGB Astrodon Tru-Balance E-Series Filters 36 mm dia.for SBIG ST-8300

    Astrodon - LRGB Astrodon Tru-Balance E-Series Filters 36 mm dia.for SBIG ST-8300

    Astrodon also introduces its latest Generation 2 E-Series LRGB filters for the new SBIG ST-8300 CCD camera.  These filters are 36 mm diameter and will fit into the new ST-8300 filter wheel ... Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: LRGB2-E36R
    $595.00

  15. Astrodon - LRGB Astrodon Tru-Balance E-Series Filters in 31 mm inserts for QSI

    Astrodon - LRGB Astrodon Tru-Balance E-Series Filters in 31 mm inserts for QSI

    Astrodon is also providing its latest Generation 2 E-Series 1.25" filters mounted in 31 mm inserts specifically for the popular QSI CCD cameras, such as the QSI532 and QSI583 ... Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: LRGB2-E31R
    $490.00

  16. Astrodon - Narrowband - 1.25" Mounted RED Continuum 5 nm Filter

    Astrodon - Narrowband - 1.25" Mounted RED Continuum 5 nm Filter

    Narrowband Filters      Narrowband (NB) filters  enhance contrast of emission objects by accepting only a narrow range of wavelengths around the emission lines of hydrogen (H-a, 656 nm), oxygen (OIII, ... Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: REDCON5-27R
    $275.00

  17. Astrodon - Narrowband - 1.25" Mounted H-a 3 nm Filter

    Astrodon - Narrowband - 1.25" Mounted H-a 3 nm Filter

    Narrowband Filters      Narrowband (NB) filters  enhance contrast of emission objects by accepting only a narrow range of wavelengths around the emission lines of hydrogen (H-a, 656 nm), oxygen (OIII, ... Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: HA3-27R
    $395.00

  18. Astrodon - Narrowband - 1.25" Mounted NII 3 nm Filter

    Astrodon - Narrowband - 1.25" Mounted NII 3 nm Filter

    Narrowband Filters      Narrowband (NB) filters  enhance contrast of emission objects by accepting only a narrow range of wavelengths around the emission lines of hydrogen (H-a, 656 nm), oxygen (OIII, ... Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: NII3-27R
    $395.00

  19. Astrodon - Narrowband - 1.25" Mounted OIII 3 nm Filter

    Astrodon - Narrowband - 1.25" Mounted OIII 3 nm Filter

    Narrowband FiltersNarrowband (NB) filters  enhance contrast of emission objects by accepting only a narrow range of wavelengths around the emission lines of hydrogen (H-a, 656 nm), oxygen (OIII, 501 nm), sulfur (SII, 672nm) and others ... Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: OIII3-27R
    $395.00

  20. Astrodon - Narrowband - 1.25" Mounted OIII 5 nm Filter

    Astrodon - Narrowband - 1.25" Mounted OIII 5 nm Filter

    Narrowband FiltersNarrowband (NB) filters  enhance contrast of emission objects by accepting only a narrow range of wavelengths around the emission lines of hydrogen (H-a, 656 nm), oxygen (OIII, 501 nm), sulfur (SII, 672nm) and others ... Learn More
    FREE SHIPPING
    (excludes AK & HI)
    Model#: OIII5-27R
    $275.00

Items 1 to 20 of 622 total

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