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  1. FLI - Research Grade UBVRI Filter Set - 50mm Square Unmounted

    FLI - Research Grade UBVRI Filter Set - 50mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    FREE SHIPPING
    (48 States)
    Model#: RG-50S-UBVRI
    $1,210.00

  2. Astrodon - Narrowband - 50mm Unmounted SII 3 nm Square Filter

    Astrodon - Narrowband - 50mm Unmounted SII 3 nm Square Filter

    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),

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    (48 States)
    Model#: SII3-50S
    $1,250.00

  3. FLI - Research Grade B Filter - 65mm Square Unmounted

    FLI - Research Grade B Filter - 65mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-65S-B
    $1,250.00

  4. Lunt - 50mm Ha Etalon-Filter-System with B600 Blocking Filter for 1.25" Focuser

    Lunt - 50mm Ha Etalon-Filter-System with B600 Blocking Filter for 1.25" Focuser

    The new Lunt Solar Systems LS50 Hydrogen-Alpha Filter incorporates a unique design feature which decreases chances of decontaction (breakage) and increases solar filter thermal stability

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    Model#: LS50FHa1/B600
    $1,346.00

  5. Astrodon - 50mm OIII 3nm Narrowband Square Filter - Unmounted

    Astrodon - 50mm OIII 3nm Narrowband Square Filter - Unmounted

    Bring out the faint structures In nebulae with the Astrodon OIII Narrowband 31mm 3nm filter. 3nm filters will greatly increase contrast and are a great way to image in light polluted locations. Setting a new bar of performance and durability for imaging and research. ... Learn More
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    (48 States)
    Model#: OIII3-50S
    $1,250.00

  6. FLI - Research Grade 3nm SII Filter - 65mm Square Unmounted

    FLI - Research Grade 3nm SII Filter - 65mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-65S-SII-3NM
    $1,250.00

  7. Coronado - SolarMax II 40mm Filter with RichView™ Tuning with 15mm Blocking Filter

    Coronado - SolarMax II 40mm Filter with RichView™ Tuning with 15mm Blocking Filter

    Coronado by Meade SolarMax II Solar Filter set with RichView tuning system. Includes 40mm diameter primary H-Alpha etalon filter with sub 0.7 angstrom bandwidth and Blocking Filter ... Learn More
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    (48 States)
    Model#: SMF40-15
    $1,299.00

  8. Coronado - SolarMax 40 Ha Filter with BF10 and TMax Tuner

    Coronado - SolarMax 40 Ha Filter with BF10 and TMax Tuner

    40mm aperture narrowband Ha filter with TMax tuner and 10 mm blocking filter ... Learn More
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    (48 States)
    Model#: SM40-10
    $1,450.00

  9. Astrodon - Gen2 E-Series LRGB Set - 50mm Square Unmounted Set

    Astrodon - Gen2 E-Series LRGB Set - 50mm Square Unmounted Set

    Astrodon 50mm Gen2 LRGB Square E-series filters are the pinnacle of high performance CCD filters. The E-Series Gen2 filters were designed for cameras containing the full-frame KAF8300, KAF3200, KAF6303, KAF16200, KAF16803 sensors, as well as most Sony and back-thinned sensors. ... Learn More
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    (48 States)
    Model#: LRGB2-E50S
    $1,225.00

  10. FLI - Research Grade U Filter - 65mm Square Unmounted

    FLI - Research Grade U Filter - 65mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

    ...
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    FREE SHIPPING
    (48 States)
    Model#: RG-65S-U
    $1,250.00

  11. Baader Planetarium - D-ERF Energy Rejection Filter 160mm with IR-Cut Dielectric Coating

    Baader Planetarium - D-ERF Energy Rejection Filter 160mm with IR-Cut Dielectric Coating

    Baader Planetarium D-ERF Energy Rejection Filter, 160mm with IR-Cut Dielectric CoatingBaader planetarium has introduced a new evolution in their premium energy rejection filters, from 70mm up to 180mm! These filters incorporate a new all-dielectric IR re ... Learn More
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    (48 States)
    Model#: DERF-160
    $1,254.00

  12. Lunt 50mm Ha Etalon-Filter-System with B600 Blocking Filter for 2"

    Lunt - 50mm Ha Etalon-Filter-System with B600 Blocking Filter for 2" Focuser

    The new Lunt Solar Systems LS50 Hydrogen-Alpha Filter incorporates a unique design feature which decreases chances of decontaction (breakage) and increases solar filter thermal stability

    ...
    Learn More
    Model#: LS50FHa2/B600
    $1,346.00

  13. FLI - Research Grade UBVRI Filter Set - 50mm Round Unmounted

    FLI - Research Grade UBVRI Filter Set - 50mm Round Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

    ...
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    FREE SHIPPING
    (48 States)
    Model#: RG-50D-UBVRI
    $1,210.00

  14. Astrodon - Narrowband - 50mm Unmounted H-Alpha 3 nm Square Filter

    Astrodon - Narrowband - 50mm Unmounted H-Alpha 3 nm Square Filter

    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),

    ...
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    FREE SHIPPING
    (48 States)
    Model#: HA3-50S
    $1,250.00

  15. FLI - Research Grade 3nm OIII Filter - 65mm Square Unmounted

    FLI - Research Grade 3nm OIII Filter - 65mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

    ...
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    FREE SHIPPING
    (48 States)
    Model#: RG-65S-OIII-3NM
    $1,250.00

  16. Chroma filters

    Chroma Technology - 50mm LRGB and Ha/8-50 Set - Unmounted

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

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    (48 States)
    Model#: HaLRGB-50
    $1,305.00

  17. CFW-4-5

    FLI - 5 position Color Filter Wheel for ProLine (50mm square filters)

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    (48 States)
    Model#: CFW-4-5
    $1,495.00

  18. Astrodon Narrowband 50mm Unmounted NII 3 nm Square Filter

    Astrodon - Narrowband - 50mm Unmounted NII 3 nm Square Filter

    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
    (48 States)
    Model#: NII3-50S
    $1,250.00

  19. FLI - Research Grade 3nm H-Alpha Filter - 65mm Square Unmounted

    FLI - Research Grade 3nm H-Alpha Filter - 65mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

    ...
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    FREE SHIPPING
    (48 States)
    Model#: RG-65S-HA-3NM
    $1,250.00

  20. Optec - IFW 3" Intelligent 3" Filter Selector System.

    Optec - IFW 3" Intelligent 3" Filter Selector System.

    To meet the needs of the ever increasing CCD size used in astro-imaging, ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 17360
    $1,295.00

Items 1 to 20 of 21 total

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