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  1. FLI - Research Grade V Filter - 65mm Square Unmounted

    FLI - Research Grade V 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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    Model#: RG-65S-V

    Regular Price: $1,100.00

    Special Price: $1,045.00

  2. FLI - Research Grade UBVRI Filter Set - 65mm Square Unmounted

    FLI - Research Grade UBVRI Filter Set - 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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    Model#: RG-65S-UBVRI

    Regular Price: $5,950.00

    Special Price: $5,652.50

  3. 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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    Model#: RG-65S-U

    Regular Price: $1,325.00

    Special Price: $1,258.75

  4. FLI - Research Grade R Filter - 65mm Square Unmounted

    FLI - Research Grade R 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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    Model#: RG-65S-R

    Regular Price: $1,100.00

    Special Price: $1,045.00

  5. FLI - Research Grade Luminance Filter - 65mm Square Unmounted

    FLI - Research Grade Luminance 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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    Model#: RG-65S-L

    Regular Price: $695.00

    Special Price: $660.25

  6. FLI - Research Grade LRGB Filter Set - 65mm Square Unmounted

    FLI - Research Grade LRGB Filter Set - 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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    Model#: RG-65S-LRGB

    Regular Price: $2,595.00

    Special Price: $2,465.25

  7. FLI - Research Grade I Filter - 65mm Square Unmounted

    FLI - Research Grade I 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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    Model#: RG-65S-I

    Regular Price: $1,100.00

    Special Price: $1,045.00

  8. FLI - Research Grade Clear Filter - 65mm Square Unmounted

    FLI - Research Grade Clear 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-C

    Regular Price: $375.00

    Special Price: $356.25

  9. 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

    Regular Price: $1,325.00

    Special Price: $1,258.75

  10. FLI - Research Grade 8nm SII Filter - 65mm Square Unmounted

    FLI - Research Grade 8nm 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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    Model#: RG-65S-SII-8nm

    Regular Price: $915.00

    Special Price: $869.25

  11. FLI - Research Grade 8nm OIII Filter - 65mm Square Unmounted

    FLI - Research Grade 8nm 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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    (48 States)
    Model#: RG-65S-OIII-8nm

    Regular Price: $915.00

    Special Price: $869.25

  12. FLI - Research Grade 8nm H-Alpha Filter - 65mm Square Unmounted

    FLI - Research Grade 8nm 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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    (48 States)
    Model#: RG-65S-Ha-8nm

    Regular Price: $915.00

    Special Price: $869.25

  13. FLI - Research Grade 5nm SII Filter - 65mm Square Unmounted

    FLI - Research Grade 5nm 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-5nm

    Regular Price: $1,195.00

    Special Price: $1,135.25

  14. FLI - Research Grade 5nm OIII Filter - 65mm Square Unmounted

    FLI - Research Grade 5nm 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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    (48 States)
    Model#: RG-65S-OIII-5nm

    Regular Price: $1,195.00

    Special Price: $1,135.25

  15. FLI - Research Grade 5nm H-Alpha Filter - 65mm Square Unmounted

    FLI - Research Grade 5nm H-Alpha Filter - 65mm Square Unmounted

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    (48 States)
    Model#: RG-65S-Ha-5nm

    Regular Price: $1,195.00

    Special Price: $1,135.25

  16. FLI - Research Grade 5.8nm H-Beta Filter - 65mm Square Unmounted

    FLI - Research Grade 5.8nm H-Beta 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-Hb-58NM

    Regular Price: $1,050.00

    Special Price: $997.50

  17. 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

    Regular Price: $1,250.00

    Special Price: $1,187.50

  18. 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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    (48 States)
    Model#: RG-65S-OIII-3nm

    Regular Price: $1,250.00

    Special Price: $1,187.50

  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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    (48 States)
    Model#: RG-65S-Ha-3nm

    Regular Price: $1,250.00

    Special Price: $1,187.50

  20. Chroma filters

    Chroma Technology - Red 65mm x 65mm Diameter Filter - Square

    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#: Red-65S
    $695.00

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